8 3/4 vs 9 3/4

Hey efriedrich, When I was drag racing, with 600 HP + the 8 3/4 (489) with 456 gears and slicks,never gave me a problem. If you just want to spend the money and add weight to your car,go ahead; dana 60`s are cool to look at under any car. In fact I have a few under cars, but just because the factory put them in place. My experience has been that a dana 60 is not necessary; but if that is what you want, I know that nothing else will suffice and these other guys should be able to help you. God bless, Wayne