Nice advice, very helpfull. I won't be needing the truck for several months, I just want to plan ahead. So as of now my #1 choice would be a 91'-92' , HO 4.0, AX-15 5spd, 4x4( NP231), shortbed. When I start building it up I'll definatley do a rear diff swap and maybe a front diff swap. I need a shortbed because where I wheel depature angle means alot and I'm used to wheeling with my wrangler. I've never done any internal engine work before, but I'd like to know some straight forward ways to remove most of that carbon crud build up from engine? As for testing renix sensors witha multimeter, how is that done? Are you checking continuity? Any how to links?