I swapped the entire motor. I had a 6bolt out of a car that was in an accident. Thre motor mated to a 2g trans. if your referring to the spline counts on the axles thwen obviously we didnt need to match them at all. If your asking which clutch i used, then i will need to get back to you on that. I left the clutch choice to the owner of the car. Either way just buy the type of clutch you want. ACT is most popular.

Terry