I've only done it once, on a friend's truck, but it seemed to work. I kept everything organized left to right, front to back, top to bottom and put it back exactly the way that it was. By rights I would imagine you should at least verify your tooth contact, etc., but I have no experience setting up a ring & pinion. I just R&R'd the parts and it hasn't blown up yet. The worst part was cleaning all of the crap out of the axle tubes, and then we used a wooden closet rod stuck through the axle tube as a punch to tap on a socket to drive in the new seals. That part is definitely a 2 person job.