hi pro, Doctor Diff recommended and sold me the clutch style until they get the bugs out of the 8.75 trac-lock. cass thought by xmas 2016 or jan 2017 that trac lock would do the modifications needed to work properly on the mopar 8.75 . its time to call him and ask about updated mods on trac lock. the doc's powerlok works perfect and is a moparts recommend from me. ronnie