The 8.75 in it is the big bolt circle. Like I said, I haven't measured it yet to see if it is the correct length for th A-Body. Is there a way to determine if the 8.75 is correct, but modified to have the big bolt circle?
RPM, I am DEFINITELY going to leave the 8.75 in it, since I found out the 8.25 wasn't available till after 71. There is NO WAY I am putting a 7.75 rear in this car. Since I am going to heat up the motor, it won't handle the kind of power I want to put to it. Plus, I have the two ( one in the Duster and THIS one ) plus another 8.75 housing :D . I am also thinking of pulling the 8.75 out of my '72 half ton Dodge that I am about to scrap.
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