Lifted XJ Cherokees

With a 3 inch lift the driveshaft angle will be off just enough to cause some bad vibes. You will need to think about either doing a transfer case drop or adding a slip yoke eliminator to eliminate these vibes. The SYE is a lot more expensive since you need to also get a new rear drive shaft and change the angle of the rear axle with shims. You will also want to get new shocks to allow the further extension.