Differential narrowing in/near Los Angeles 8.75 to A-body size shops needed

Thanks for the info, Its going into a much older Mopar. A '33 Plymouth Sedan. I'm wanting to keep it all Mopar. Also I already bought a 8 3/4, I want to keep the bolt pattern also.

Tonight I'll put the old diff in and check the wheel clearances at this width with wheel setup and compare.

I checked the axle center on the springs with the wheels Im using on it, the fender edge would hit and it has that odd ball "the wheels are too far out look"
I thin the 2"ish in difference should work for what I need.