Go to 31 Spline Eaton or Aurburn pro (Both around $360) if it is a daily driver. Remeber you have 28 spline axles so if you do up grade to the 31 spline you need new axles. Moser and Strange make good axles.
These are just my opions from my research. We just bought the eaton E-Locker but it is for the 8.8 in the jeep. Best of luck man.
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2003 Sonic Blue Cobra
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