I bought this truck off my grandfather, for my 16th birthday, for only $600. Drive it everywhere I can. Has 89,700 miles. I upgraded the stereo(from the cassette radio it had). Love the interior, its very comfortable. The exterior has some rust above both back wheel wells. Everything else is in great shape. The engine sounds like a beast. My grandfather comes by every month to make sure the truck is still in good condition.
Roomy interior, great engine. Good sized bed for minor hauling.
Better gas mileage, receiving 12mpg in summer, and 8 mpg in winter. Like driving a Hummer.
I love my 1991 F150. My wife named him Bubba, quite appropriately. Runs great, was inexpensive, near perfect condition. Does everything my lifestyle commands. If I were to ever lose it, I would feel like my right arm was cut off.