don't know a thing about the ax15 trans. i know i need a different tailshaft to swap my 2wd to a 4x4, but that's it. what's the easiest way to replace the tailshaft? anyone else done this? i've been an auto trans guy my whole life, but i actually want to keep the manual for my XJ. feels nice. but yeah, help please? if anyone has info, i'd appreciate it.