8 3/4 rear end for sale?

I've got a 7 1/4 behind the 273 in my 65 Valiant, and its held up fine. If you're just planning on driving the car, even the little 7 1/4 is fine. The guy I bought the Valiant from wasn't the nicest on the rear, and I don't drive it all that light either, and its obviously held up for 46 years. I'm by no means saying you can do burnouts all day and they'll last, but if you're just using the car as a driver, why go to the trouble?