My dad bought this 1979 F-250 around 1984 as a bucket of rust and a daily driver. He immediatly replaced the ragged 36" tires and wheels with 38" Gumbo Monster Mudders and 16.5" aluminum Western Wheels. He rebuilt the 351 M and added a couple goodies in the process. We did major cosmetic work and freshened up the motor in 2007 and I use this as a work truck now.
1979 Ford F250
Engine
351 M with a mild Crane Came and a 650 cfm Holly carb. giving the motor roughly 250 hp.
Suspension
6" suspension lift. The rear lift blocks were removed in 2008 and replaced with a rediculous stack of springs good for up to 7,000 lbs.
Tires/Rims
16.5x9.75" aluminum Western Wheels. 38x15.5x16.5" Super Swamper SSR's
Interior
Mostly stock with the exception of a 1994 vinal Ford truck bench seat.
Audio
Pioneer deck with 6" Rockford 2-ways up front and 6x9" Kicker 3-ways in boxes behind the seat.
Modifications
Dump bed with home made Aluminum sides, fenders and rear light bezels. Bed dumps 72 degrees as opposed to 54 degrees after mounting the hoist backwards.