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I am looking into upgrade the third member in the rear end of my 70 mach I. I have stroked the 351 cleveland to 398 and should get about 450 hp. I would like to upgrade to a traction loc with 31 spline. There seem to be many places to buy from but I am not sure of the quality of the units. Any help with what to look for or any experience with a retailer would be greatly appreciated.

THanks

Brian
 

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Brian

Try googling powertrax units from Richmond. I will likely be going with that style unit as well, since I intend on upgrading my center section as well. Some of the ebay sellers are actually pretty good as well. I used a reputable one from there for my Shelby Cobra Replica and was very pleased with the results.
 
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