A-BODY REAR END

I need a rear end for my 1965 Dart GT 273. I am in the market for an 8.25 or 8.75 rear. 3.21 and up gears. I'm located in the Palm Desert area of California.
The 7.25 that my dart came with is trashed from the PO and he stripped the good parts off this car to fix another. So it's all about finding parts to put this car back on the road
i have (2) 7 1/4 rear diffs from 65 barracudas both work fine 1 of them is from a commando formula S barracuda and i live in phoenix not to far from you