SBP or BBP?

IMHO, Nothing looks better on a '65 than Rallye rims. And they are still a SBP rim so dont waste your money. 8.75 A rear ends were all SBP and 67 disc brakes were SBP so you have all the hardware available to beef up the axles. IF you want to be able to save money and you KNOW you are going to upgrade the rear end, go with the 8.25 rear (in BBP) and youll be $400 ahead of a 8.75 and not lose any reliability with that 6's power to the rear. Enough to get later BBP disk brakes up front. Keep in mind you still got a 6. No part breaking torque monster there.