I have been researching axles and swaps recently and from what I have gathered, pretty much everything will swap over. The only real difference between the 30 and 44 front is the housing. Everything is the same and will swap over, shafts, knuckes, brakes and so forth. While upgrading you might wanna upgrade the u-joints to beefier units as those are usually the weak points in a 30 or 44 front. Might as well put some Warn hubs and chromoly shafts in too. With that setup you will good up to 40" tires depending how you are on the gas. Someone with more experience will step in Im sure. HTH.
~~2000 Black TJ Sport~~
-Parts list keeps growing...