The new T56 Magnum F has the 4 bolt style shifter which IMO is superior to the offerings of the 6 bolt style. My original T56 Magnum from 5+ years ago leaked like crazy with the factory 6 bolt shifter. Even the aftermarket billet shifters IMO were never as good as the newer F style 4 bolt stock shifter (or MGW etc you can bolt up). Aside from that they are basically the same I'm guessing.