Removed aftermarket wheels and tires, found a 1" spacer behind the pass side rear wheel. Removed stock rearend replaced axle bearings, axles, pinion seal, all control arm bushings, and panhard bar bushings. Looked at the springs and noticed that they had been cut maybe 1/2 round. Installed rearend, control arms lined up fine, panhard off about 1", used a ratchet strap to pull the rear to the left. Raised rearend up until it just lifted the car off of stands. Tightened all the bolts with the floor jack under rearend. Just wondering why the 1" spacer is on one side not both?