Out of all the a bodies I have bought for parts in my life time I never got one because the rear end had gone south. Good rear ends for the original application if it is maintained. Maintance is the life of anything.
I agree, the only 7.25 i've seen that took a dump was a kid with a 70' 318 Duster that had a fetish for doing donuts in every parking lot he ever came across...lol.