1966 Ford Mustang Factory 289 K-Code HI-PO GT 4-Speed Air Condition Convertible

1966 Ford Mustang GT

Technical specifications of Ford Mustang 1966

Price: US $89,000.00
Item location: Buford, Georgia, United States
Make: Ford
Model: Mustang
SubModel: Convertible
Type: Convertible
Trim: GT
Year: 1966
Mileage: 79029
VIN: 6FO8K331781
Color: Red
Engine size: 289 Hi-Po K-Code
Number of cylinders: 8
Power options: Air Conditioning
Fuel: Gasoline
Transmission: Manual
Drive type: RWD
Interior color: Red
Options: Convertible
Vehicle Title: Clean
You are interested? Contact the seller!

Car description


This is a 1966 Ford mustang convertible factory k-code with a 289 Hi-Po motor, 4-speed, GT package and air conditioning!

Every once in a blue moon you come across a car that is what would be considered the holy Grail of that specific model. In this case we are talking about a car where Ford built only built perhaps 100 in 1966. This car is more rare than any 1966 Shelby Mustangs built. Out of those 100 or so cars, most were fastbacks and coupes and very (very) few were convertibles. This is one of those cars.

This is a factory built Mustang convertible matching numbers K code, 4-speed, GT package, and air-conditioning. The car has been sitting for the last 15 years and has recently been purchased from an estate, fully serviced by our shop and is ready for the next owner.

This is truly an amazing and rare opportunity to find an all matching numbers K-code car. Original door data tag and 25 years in the k-code registry show this car to be a survivor with one repaint. A nice driver indeed!

One of the most rare and most desirable of all mustangs, including the Shelby's, this factory correct convertible is equipped with the legendary high performance 289 K code V8 and 4-speed makes this one of the most unusual and rare HiPo in existence.

The K-code high-performance engine, known as the (HiPo 289) was first introduced in 1963, and it found its way into the Fairlane and Comet.

Carroll Shelby knew that the spunky V8 was the perfect engine for his new 1965 GT350, and the good folks at Ford were happy to oblige. Ford wanted the Shelbys to dominate the track and street, which only served to energize the Mustang mystique. Ford also wanted Mustang buyers to check the rambunctious, solid-lifter "K" engine as an option for any of the Mustang body styles — the humble coupe, racy fastback or sporty convertible.

Out of the box, the K-code 289 made 271 horsepower (306 in the modified Shelbys) — ever so near the one-horsepower-per-cubic-inch milestone that Chevrolet hyped so much. The K-code 289 made its power without the help of a supercharger or fuel injection.

This engine was Fords best naturally aspirated small block, and it simply pumped out the ponies effortlessly, with plenty of torque and throttle response. Even today, the K-code engine is noted as one of Fords most illustrious achievements.

The Mustang enjoyed a sales curve that most automotive CEOs would envy — especially today. However, the K-code Mustangs never sold at the same pace as other V8 models. The power plants available in the 1965 through 1967 models were plentiful enough that most buyers simply did not check off the somewhat pricey K-code as an engine option.

As it was, the 289 engines came in the C-code 2-barrel carb and the A-code 4-barrel carb. Most buyers simply ordered (or purchased off the showroom floor) the 4-barrel-optioned 289 if they were seeking a more thrilling driving experience. By 1967, Mustang buyers could opt for the big-block 390.

So amid all the hype and excitement over big-block horsepower offered in all the American muscle cars, the 390-ci engines ended the HiPo 289's run in the Mustang.

In total, it is thought that only 13,231 K-code Mustangs rolled off the line from 1965 through 1967 (for all years and body styles). There is no specific breakdown for total K-code production by body style until 1967. While 13,231 cars may sound like a lot, it's actually quite low compared with the nearly 1.7 million Mustangs sold through 1967. By the breakdown, Ford sold 7,273 in 1965, 5,469 in 1966 and a paltry 489 in 1967. The number of K-code convertibles produced is widely agreed to be staggeringly low. Less than 1% of 1% of convertible production!

Part of the reason for the added expense of the K-code HiPo option dug much deeper than just an engine swap.

Ford knew these cars would be pushed hard. Buyers who opted for the 271 horses didn't plan on using their car to drop the kids off at school. All sorts of parts were upgraded for the added stress of pedal mashing and tire smoking.

The engine flew under its own specs — as did much of the suspension, clutch (it could not be ordered with an automatic transmission until 1966), 4-speed, driveshaft, differential and other under-the-hood goodies. The K-code car was really its own Mustang model — which translates to a very special (and rare) Mustang today.

Separating the rare from the rarest

Finding a K-code Mustang for sale is not all that hard. With an effortless click of a few keys, I jumped online and noted over 7 for sale. And, as expected, most are coupes, with a few fastbacks sprinkled in. On the other hand, I found only two K-code convertibles. Both listed "inquire" instead of an asking price.

The fact that one didn't need to order a GT model to add the K-code option adds to the value dynamic. So the rarity of this car increases, as it is a GT build from the factory. Keep digging, and you'll soon learn that finding a K-code GT convertible for sale is very, very difficult.

Pushing all the buttons

At the end of this long and winding road, our subject car pushes a bunch of the right buttons — far more than most others that simply have a "K" in the VIN.


  • K-Code GT Convertible factory 4-speed air conditioning
  • Recent full bumper-to-bumper service - all fluids drained, systems flushed and all operating systems serviced
  • original carburetor rebuilt
  • new master cylinder
  • In the k-code registry
  • Very highly optioned
  • K-Code 289/271 HP solid lifter V-8 engine
  • 4-speed transmission
  • documented
  • original door tag
  • AM radio
  • Styled steel wheels
  • 25-year-old paint needs hood-damaged fixed
  • Candy apple Red with Red pony interior
  • White soft top needs a new rear window
  • Full length console
  • Pony interior
  • Flasher switch in the glove box

Fly in and drive home

About Stephen Becker Automotive Group:

Stephen Becker Automotive Group has over 150 cars in stock. We pay cash for cars and can consign and sell individual cars and complete collections. Ask us

for more details.

Stephen Becker Automotive Group realizes how difficult it is to purchase any automobile over the internet from a classic car dealer or private party.

Is the engine original? Are all the vehicle identification numbers where they should be? Has the car been tampered with? Is the car really worth the asking price? Stephen Becker has bought/sold/inspected/appraised/certified over a thousand GT 350's, GT 500's & GT 500KR's to happy buyers all around the world. 35+ years in business with a sterling name and reputation in the hobby. We buy/sell/consign/inspect/appraise all makes and models of classic, antique & muscle cars. Stephen Becker is a long-time NADA advisory board member.

Stephen Becker was business partners with Carroll Shelby from 1977 until Carroll's death in 2012.

Stephen Becker offers an inspection service, an appraisal service and can be very helpful with transportation details. We can inspect the Shelby, handle all financial details and take physical possession of the vehicle for safe keeping. We've shipped numerous muscle cars, of all types, to Australia, Italy, New Zealand, Switzerland and all over Europe.

Contact us before you drive to the bank and send a stranger your life savings!

Stephen Becker personally works side by side with the Shelby American Automobile Club registrars and have supported their efforts to keep Carroll Shelby's automobiles and contribution to the automotive industry alive.

Stephen Becker is one of the most renowned Shelby authorities in the world, announced the introduction of a new certified appraisal program for 1960s Shelby Cobras, GT350s and GT500s. Previously available only to a select group of companies and celebrities, SGB's invaluable expertise is now available to individuals contemplating the sale or purchase of a vintage Shelby car.

"For years, MOPAR, Corvette and Ford collectors have had access to detailed appraisals from experts in those cars, but enthusiasts have not been able to tap a form program when considering the purchase or sale of a Shelby," said Becker. "With the expertise, records and access to details of Cobras, GT500s and GT350s available through me, collectors can now have the knowledge they need when making a decision on a Shelby they want to purchase or sell.”

Becker personally has performed evaluations for years and attended key collector car auctions for a small group of corporate clients like insurance companies and manufacturers. In late 2009, Stephen Becker provided an appraisal of 75 cars in the corporate and museum collection of Shelby American. The appraisals were done for Shelby's insurance company, which requested current values of the extensive collection of significant cars. Other high profile corporate and celebrity clients have included the famous Shelby Parts & Restorations company, as well as leaders in the music and entertainment industry.

"Shelby cars are usually considered blue chip collectibles, but each must be carefully inspected and appraised to understand the true value," noted Becker. "Not only is it important to ensure a car is a genuine Shelby, it's critical to understand its history. The value difference between a survivor car with great provenance and a Shelby 'rebuilt' from a few major components left over from a wreck can be hundreds of thousands of dollars.”

Stephen's knowledge and extensive library led to the creation of the Becker Certified Shelby Certification program. A proprietary 25 point inspection and exhaustive research provides the most thorough report on the market for genuine Shelby vehicles.

Over the past decade, Stephen Becker has been retained by key automotive groups, collectors and industry leaders to authenticate and value Shelby vehicles. This led to the creation of a program for individual collectors and enthusiasts. When completed, a client received a detailed report with a history of the vehicle, if available, and documentation to validate the value.

Since 1977, Stephen Becker has been regarded as a leading authority on 1960s era Shelby Cobras, GT350s and GT500s. The company's expertise and in-depth knowledge have been tapped by clients to purchase, consign and restore original Shelby's. SGB has represented clients around the world on stage when their Shelby's crossed the block.

Founder Stephen Becker was one of the youngest people to ever be selected as a finalist for the Ernst & Young/Inc. Magazine "Entrepreneur of the Year" in the early 1990s.

Stephen Becker Automotive Group Inc. is a licensed and insured Georgia car dealer.

This vehicle is being sold as is, where is with no warranty, expressed written or implied. The seller shall not be responsible for the correct description, authenticity, genuineness, or defects herein, and makes no warranty in connection. No allowance or set aside will be made on account of any incorrectness, imperfection, defect or damage. Any descriptions or representations are for identification purposes only and are not to be construed as a warranty of any type. It is the responsibility of the buyer to have thoroughly inspected the vehicle, and to have satisfied himself or herself as to the condition and value and to bid based upon that judgment solely. The seller shall and will make every reasonable effort to disclose any known defects associated with this vehicle at the buyer's request prior to the close of sale. Seller assumes no responsibility for any repairs regardless of any oral statements

Carroll Shelby designed and built the shelby mustang, boss 302, boss 429, gt 350, gt 500, gt 500kr, 427 shelby cobra, ac cobra, he was president of shelby american,

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