Yukon Duragrip posi for '63-'79 CI Corvette with 17 spline axles, 2.73-3.90 ratios.
The Yukon Dura Grip provides aggressive yet smooth traction to give you the confidence & performance you need. Get longer life and better traction with the heavy duty Yukon Dura Grip Positraction. The Yukon Dura Grip uses a nodular case and forged 4320
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