8 1/4 Differential desperately wanted

All I can tell you is the one in the Barracuda saw many an impromptu "race" during it's life. The 273 was faster than the 318 in the Dart. There is an 8 3/4 now in the Formula S, because I could easily change gears to suit. The original 7 1/4 rear was fine when I changed to the larger rear. I'll get an idea on shipping. Are you willing to pick it up at a terminal? Near Indio, CA