Well my winter project for this year is to redo the rear-end. I will be adding a Tru-Trac, 3.73's, all new bearings/seals and possibly axles with c-clip eliminators. I heard it is better to use the shim kit instead of the crush sleeve for the pinion, do you guys have any opinion on this? Also was wondering if you can get an install kit that includes the shim kit or do you buy that seperate?