One thing you should know...adding the missing bushings will firm up your ride....if you like to take long trips it can be very annoying. When I came home from a recent 12 hour trip (6 hours each way) I found that the metal hangers that were welded onto my tail pipes had broken. Not sure if the firm ride caused it or not, since they are welded to the frame, but you may not be too impressed after you complete this job. And I have all rubber bushings. GM left out the "missing" bushings for a reason.