[njsteve]

My Z11 leaned 3/8" low on the left rear. The other 3 corners had the same height measurement compared to each other. It was bizarre. I tried shimming the body mounts, swapping rims, taking the spare tire out to see if it helped, but it never did. I even brought it to a frame shop and the measured the body dimensions and every measurement under the car was found to be dead on to the factory specs. I think the ultimate consensus was that the car was just welded up slightly off at the factory. I have heard from a bunch of other Camaro guys who have had the exact same problem. These were just metal boxes being welded together by low wage assembly line workers back then with no regard for future collectibility. Essentially, there is no fix unless you want to run one 15" wheel and three 14" wheels to make it sit flat.