Look very closely in the two parts breakdowns that I have posted. Older tranny and newer. First the older. Notice the RH & LH quills are different. The VTA588RH quill has the snapring. The VTA589LH does not. In the quanity used colum, notice the VT3477 snapring is (1) in both styles. Same with newer tranny. VTA2798 RH quill includes snapring and race. The VTA2799 LH quill has bearing only. The same single VT3477 was caried over into the late tranny.