Given the growing scarcity(and cost) of 8 3/4 rear ends for A bodies, does anyone have an idea of how much horsepower the 7 1/4 can take and is the Sure-Grip any stronger than the one legger? Maybe share with us what broke yours or whatever? Everyone talks about how weak and puny they are but just how weak and puny are they? I think a lot of people who may be stuck with no other choices would like to know. Thanks.