Just throwing this out there. If I could shorten my 8" rear end that has a new TJ tru loc or trac center section in it and 1/2" or better yet 5/8" I could fit an additional 1" in width of rubber under it. My car is now a trailered autocross car living it's life less than minute at a time. I want to keep the car squared as in the front tires and wheels can be rotated back and forth with the rears between events greatly extending tire life. I'm not exactly sure if there is anything other than the big ol bead of weld holding the ends on the housing or there is more involved? My new Moser axles have splines an additional inch over the factory axles so shortening them is no problem.