Sure grip 7 1/4 strenght?

65Valiant, i sure will the only thin id keep is the 10 inch drums unless i find an 8 3/4 thats got all the small bolt hard where already. Powerwagonpaul i have a complete 8 1/4 abody rearend out of a 74 dart but i want to keep the small bolt pattern i have now is the only problom.