I own a 1984 F150 XLT with a 351w (5.8 liter) and a 4V Holley carb. I 'just' had the differential rebuilt and the Ring & Pinion gear ratio that was in there was 3.0. It is a 9" Ford differential (stock). I had it replaced (it was worn anyway) with 2.75 ratio for better highway driving. I am not sure about the HP, though. My truck is wholly stock and I have been giving it a 'rolling restoration' since my late brother passed away in 2006 (I inherited it from him).
9004
P235-75r15
yes as long as its a five lug wheel
231 bhp. and 300 for the 5.4L F150
what does sta mean on a 1984 ford f150 alternator
Rotors
why does my 1984 ford f150 302 v8 cut out while moving
what is the axle gear ratio for a 1998 ford ranger 4x4 4.0l?
.044 inch
because its cool and you need them both
A 2005 Ford F150 can be purchased from Edmunds used cars who currently stock that exact model. Kbb and the Autotrader are also two valuable places to check.