ive been tossing ideas around in my head and ive decided I'm going to put my 2.5 in my resto mj . the rear exeel it has init now has 3.07 gears i think so with a 2.5 that would pretty much suck. the other axels ive got are from a 4cyl 4 speed, and a 4cyl 5 speed. ive also got an xj axel that was 4cyl auto. I'm just wondering what one i shoud put in for the 2.5?