So my free 86 5/8 ton 4x4 (was so weak it didnt warrant the 3/4 ton logo) has gone from 318 lean burn to 318 4brl to 5.2 mpfi over the years. Running so good a body swap was in order so a 1991 tbi 2wd body when on, dana 60's frnt/rear with king pins and factory 3.54 limited slip rear. So I just married the 86 mpfi 5.2 ecm to the 91 tbi body (keeping cab in tact) using a 1997 harness and a 96 van power dist center (extra relays and 50amp fuses to ditch 91 fusable links).

http://sphotos-a.xx.fbcdn.net/hphoto...37140915_n.jpg
Looks crazy there but I'll post nearly complete, very tidy setup shortly. And here is the new look prior to wheel spacers:
http://sphotos-b.xx.fbcdn.net/hphoto...11922189_n.jpg
If you ever saw my old rusty red PU that was formerly blue before a roller paint job she looks new! Years ago the truck was truly run to the ground and free to me, broken springs and u-joints are all happy over the years.