Setting pinion angle is easy via on-car adjustment, no need to remove the control arm to make adjustments. These upper control arms are basically new, they were intended for a custom 4-link setup on a Fairlane. I ended up changing the setup to a 3-link. They were installed but never used on the road, only for fitment of rear end in chassis. Excellent condition, only minor scuffing on inside of mounting ears that attach to the axle mounts.