1987 Ford F-150 EFI 5.0, ENGINE IS BARELY RUNNING, extended cab, short bed

1987 Ford F-150 EFI 5.0, ENGINE IS BARELY RUNNING, extended cab, short bed, clear title in hand.
I bought it in 1991, second owner, stopped using it in April of this year. Over 200,000 miles on truck, engine and transmission have been rebuilt once. Transmission has a cooler on it, has had since rebuild.
Has an extra spring to hold up the back end for bumper pull trailer.
Interior good, drivers side seat worn thru on outside bottom. Back fold up/down seat is like new.
Power window on passenger side not working, electric door locks work intermittently. Cruise control does not work.
Hankook tires, 31x10.50 R15LT, are three years old with less than 2000 miles.
Original hubcabs. A/C cold. Towing bumper with electrical plug. Electric brake controller works.
Most exterior trim piece on hand, tail gate piece is off but in good shape.
Has a spare but hasn't been off in 10 years.
Paint job poor, rust as shown in pics, has had body work under extension on cab.Excellent camper shell included and Chilton manual.