70 Rear End

[Rock70]

My car has CRX code on the rear end. I know it is a 10 bolt but is it a 8.2" or 8.5"? I'm interested in a possitraction and improving the ratio also.

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[MadMike]

If it's for a 2nd gen, it should be a 1970 8.2 rear. The 8.5 showed up in 1971.