Big block gears

I have the 8-3/4... 3.23's are so easy to find used that's where I usually get them but if I buy new Dr. Diff is great to deal with. Too bad your not close, I have an extra 8-3/4 3rd member with 3.23's sitting under the bench that I don't need, (that is assuming you have an 8-3/4 rear). It's an open differential but a sure grip could easily be installed if you wanted to.