Originally Posted by Rusty

The first upper control arm you listed is the best one, and the easiest one to adjust. With the SPL arms. You don't have to remove it from the car to make adjustments. You can adjust both camber and caster. This is the arm I have.

The second is the Z1 arm. It's harder to adjust camber. If you want to adjust caster. You have to remove it from the car. You have 2 options, bushings or bearings at the chassis mounting point.

The third arm. The SPC. Is ok for street use. Mostly only adjustable for camber. It's not easy to adjust either. Some have complained, it has a hard time holding it's setting at the track.

Some places only sell both front and rear bars Hotchkis together. I run the rear bar set on the softest setting sometimes. Only because of my rear tire size. 345/30-19. You can run the Hotchkis rear bar, but think you will switch back to the stock bar. Adjust the car to your liking.