I picked up a 242 from a 98 zj to swap into my 5.9. The 249 is isy and the 242 is esy, I have the driveline from the 242 as well. I'm just wondering which shaft I should run. I've read that 4.5" and more lift you use the isy shaft because it's longer, but I'm only at 4" of lift. I don't want to take out the rear springs and fully compress the back with each shaft to see which is better if I don't have too.
5.9 Limited, RE 4" lift, RE FTB, JK take offs w/ 255/75/17 BFG MT's, 1.25" wheel adapters, ARB Bumper, Superwinch LP10000, K&N intake, Flowmaster, custom JL & Focal stereo, 20% tint, KOR roof mount tire carrier, JCR sliders, cobra 75 wx st