I parted a bunch of 70 SJs for the 455 4-bolt block and 12-bolt rears. I've found it to be about 50/50 when it comes to posi vs non-posi rears. I have found 3.31 12-bolt posi rears, 3.07 posis, and 3.07 open rears in 1970 - 1972 GPs.
I've parted a bunch of 71 & 72 SJs for the 455 engines, and I have never seen one with KR, KN, or JW wheels.
Mike
|