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  • Allison 6 speed and Shifter lever


    Has anyone here done the Allison 5 to 6 speed conversion and or used the Tap shift lever upgrade? Specifically the suncoast valve body, TCM and...

  • 8/17/2016

    06 Chevy Duramax LBZ, pretty much stock everything except for 5 inch downpipe back magnaflow and a hypertech programmer.