So I am looking at my vehicle and I am seeing that the following need to be replaced. 1. Upper Control Arm bushings 2. Shocks 3. Springs The stabilizer links look fine, upper and lower joints look fine, lower control arms look fine, steering rack looks fine, wheel hubs look fine. So I am going with the Belltech 9510 shock set up for adjusting the height for the 1.5 lowering springs I have, and found the Moog K200269 Control Arm Bushing for a good price. What parts determine how the Trailblazer stays in alignment? I am going to be replacing the tires soon and there is some wear patterns that are not equal, they seem to be more worn from the inside more than the outside.