I've decided to put my 1989 F250 single cab, longbed, 4wd up for sale. 1992 engine with less than 130k miles on it, timing bumped and fuel screw turned up 2 flats, 3.5 inch straight pipe exhaust, 6.9 air intake tube, reese hitch, bedliner, ZF5 with 30Wt non-detergent oil, BW1356 X-case. Truck is...