Originally Posted by Jwhughes3
The truetrac is built to replace the open carrier not varilock. You needed the open carrier to mount it on plus open carrier axle shafts to work with it. About $130 new at Advance Auto.
This is correct.
Its kind of unclear above, so just to clarify, the open carrier is not needed with the TrueTrac.
The TrueTrac is the carrier, it replaces the open carrier as you said.
Vari Lok diffs use unique length axle shafts. These unique length axle shafts are not compatible with aftermarket differentials/lockers unless specifically stated so. I'm not aware of any aftermarket diffs/lockers that are compatible with the Vari Lok specific axle shafts.