My buddy has a 88yj. It has SOA w/33's soon to be 35's. He is currently swapping out the stock peugot trans and t-case and going in with a ax-15/231 combo. The 231 has the slip yoke eliminator so he has to order a new rear drive shaft andf his front one was damaged beyond repair a few weeks ago. The question is what modifications will he have to make to run a tj front shaft? Just change the yokes? Shaft need to be extended of shortned? He is still running stock axles.