Well, in most of the reviews I've seen, people complain about the lack of instructions, but never leave a solution. Here. One rubber bush fits into the other. One of the holes on the outer bushing is larger than the other side, find this out before tightening the nut, which SHOULD NOT be removed after installation. Also, do not overtighten this nut, it should only be lightly tightened. Once your wheels touch the ground again, the bushings will tighten (compress) even more. Also, use jack stands to hold the car up so you can get the jack under the new shock to line things up. All in all it was an easy task. The truck is running great again! These Bilstein shocks are more expensive than most. I replaced my original ones with some cheap Monroes 2 years ago but they are already wearing out. I hope it doesn't happen this time. I probably should have just spent the money 2 years ago and wouldn't have gotten myself into this situation again so quickly.