Ok here is one for ya. Have a 85 mustang with a 8.8. Just removed an auburn pro from it and installed a factory clutch pac (equaloc) from the junk yard. Drove it and had vibration in the gear shift. Removed equa loc installed new bearings and races, still have same prob. called Currie they said that would not cause a vibration just a humm (there is no humm with my vibration). checked the wheels apears that the ballance weights are still there. any help would be greatly appriciated. Chris