we mine was a long box with a 20R and 4 sp
so in short heres what i did
toy rears up front,mazdas in rear longer shackles and moved the hangers fowerd for ride,ford shock mounts in front,turned in in the rear,rs9012 all around (same lengh),square front d-line,5:29 and welded f&r,weber,header and 2 1/4 exhaust,bobed 18in off the back,shorten center 6in (24in totle),duel cases---- with a 4sp and duel cases if you shorten your frame 6in you can use a stock 5sp short box rear d-line,york OBA,rollcage,2nd fuel cell (28 gal. totle for both)high stear x-over,vented rotors.1in MC,wide rear end
ohh and a bunck of other stuff that was just off the top of my head