For Sale: On NOS 3.73 Ring and Pinion for a 12 Bolt Rear Axle, part number 3961408. This ring and pinion set fits all kinds of GM 12 bolts, including Camaro, Chevelle, Nova, Impala, etc. Gears are new and have never been installed. Asking $500 for the set. Shipping is extra if you are not in the Detroit Metro area.


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