Lifted trucks with big tires, will probably need drive shafts before axles. You need them for more than hard wheeling. The angle of your stock drive shaft is not ment to be bent the way we bend them when we put the lifts in these trucks. You can get away with it for a while....more severe with 3" or more lift. But something every lifted jeeper should be aware of.

When you dont want to do it is on the trail in the middle of nowhere. So if you are the type of wheeler who likes to hit the throttle as a solution, you probably want to put this change on your "to do" list.