Nice build you've got going there! I've got an 88 YJ with the 4.2 and 5sp, 32" tires and a 2.25" lift. I've done a decent amount of 4x4ing with it at some of the local gravel pits and it's done well. I plan to soon replace the engine and trans, the old 4.2 having tons of blowby and the peugot trans in it has worn out synchros. Been thinking of swapping in a late 80's or early 90's efi ford 5.0 and an ax-15. My first thought was to do a magnum injected 318, but the 5.0 is narrower, distributor in the front, lighter and can be found in an old boat grandpa car at the local u-pull junkyard.