Installed the fronts this morning, only took two hours including the time needed to swap over one of the top hats (one of the assemblies I bought had a broken stud). When I got all done and pulled the car out of the garage, I found a conical bushing/spacer lying on the floor. I think I know where it goes (on the rear under the GTSpec trailing arm stiffener) but I'm not messing with it today.