I've busted way to many 8 3/4 rears over the decades on the track and street on B and E body cars, they aren't worth the effort/expense, I'll trade the weight of the 8 3/4 for reliability/stoutness of the DANA

My Charger is running a Dana 60, 4 wheel disc, 7/8" rear bar, 4:10 gears, 440/6, Keisler TKO 600 .064 OD, and yes, Green Bearings going on 12+ years, 40K+ hard miles, many different tracks around the country, Power Tours, street driven, etc with no failures, I beat the piss out of my cars, and expect parts to take it