I have a Detroit Trutrak for a GM Corporate 10 bolt front 28 spline 3.73 ratio and numerically higher. Along with a Trutrack for a GM corporate 12 bolt rear 3.73 ratio and numerically higher. Excellent condition with only a years worth of use on them. Paid 363.00 each when purchased. I would like to get 400.00 for both of them as a set. Please give me a call if interested. 209-588-1000 days or 209-770-6006 cell

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