Join Date: Jun 2005
What he said.. The aluminum ones will crack. Only get steel shims. You really need to crawl under your Jeep and measure the difference between your TC and pinion. For a standard slip shaft you want those measurements to be as close to parallel as possible. Also, make sure you get the type of shims that bolt under the spring pin and not slip over it.
1990 Jeep YJ 4.2
Howell EFI, BDS 3.5" lift, M.O.R.E 5/8" Boomerang shackles, 1" Daystar BL, 1" JKS MML, TFI, Crager soft 8s w 35" Dunlop Mud Rovers, Ford 8.8, 4.88s, Dana 30 E-Locker, Terra Flex SYE, Tom Woods CV shaft, Warn M8000.