8.25 build
Make sure to check the thread-in carrier adjusters. I've cracked two sets in my 4 speed, small block on street tires.
I made a tool for adjusting them. A 4 foot steel bar stock with a 1/2" drive socket welded in reverse on one end for a ratchet. On the other end I simply welded a large nut that fit inside the hex adjuster. Works awesome for these rears.