Re: 1966 Rear End Swap
65-69 are the same 30 spline axle, Some are posi and some are open spider gears. 70-87 are wider, but you can bolt them in with the correct backspacing rims. 71-87 are 5 lug rims. 65-70 are 6 lug. Your best bet is to find a axle from 65-69 with a posi or just buy a posi with the correct gears you wanna run.
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