Not sure what you are building, but my son's 1973 4 door Dodge Dart has a 7 1/4 rear. 2.76 sure grip, still going strong behind a 318 with 273 4 barrel intake and carb, 73 340 exhaust manifolds, dual exhaust and a small Mopar Performance camshaft. 100,000+ miles. All that said, I know where there is an A Body 8 1/4 rear for $300. I could crate it up and ship from SC. Do you want to spend that much and shipping?
