I just put a roughly 2" lift on my '99 Cherokee Sport, using 4886186AA springs in the rear, and Moog CC782 coils + 3/4" spacers in the front.

Unfortunately, I now have massive vibrations ~35mph and up. I guess late XJs can have vibrations at low lifts, and I'm just unlucky.

1. My mechanic friend suggests changing the U-joints out, on the theory that even though they feel tight, they might have been pushed over the edge by the added lift.

2. I've seen references that the late XJ Upcountry Models had a TSB or similar to put in a mild t-case drop due to vibes. I'm a little tempted to try adding 1/2" of spacers and see if that helps.

3. I'm not really opposed to doing a hack and tap SYE, but I see references for using a front drive shaft with them at 3+ inches of lift, so I'm worried that with my tiny lift the shaft will be too long.

I am NOT likely to lift this any more, I just wanted a little boost, and to run 30" tires. Thanks for any help!