1984 Chevrolet C-10 Scottsdale 4x4

Nice Truck, I bought this from the 2nd owner of 20 years. Very good paint, excellent body (no rust), good tires, excellent interior (it had a seat cover on it for the past 20 years), good brakes, sounds amazing with glasspacks, believed to be the right miles at 82,601. I have a spare rear glass with sliding read window in good condition and window motor (not sure if it's good).
What it needs:TuneupEngine DetailingSpare tire,Rearview window re-glued,Radio works not wellAC needs charging (maybe more stuff). It's all thereHorn doesn't workPassenger window slowTemp gauge doesn't work
Video and more pictures upon request call with any questions (256)656-3584 Thanks, Anthony
$500 non-refundable deposit within 24 hours, must pick up in 14 days.

On Sep-18-19 at 03:54:53 PDT, seller added the following information:

I wasn't sure if it was a 305 or 350, so I took it for an oil change and asked my mechanic. He said it was a 350, he could tell by looking at the starter.

On Sep-18-19 at 04:01:41 PDT, seller added the following information:

After more research the engine is either a 305 with a 350 starter or a 350 engine with a 350 starter. I was told when I bought the truck it was a 350. Anybody have suggestions on how I can tell? The block does not have 350 or 305 stamped on it.