At the time I began talks with my supplier he had no 66x66 pin yokes. If they become available I’ll be able to supply DC rear shafts.I'm interested to see how this goes. I have replaced both my shafts with DC Tom Woods. I have a recurring problem in the rear where my TC output shaft/bearing keeps becoming loose and I have no idea why, this obviously leads to vibrations (mine does NOT have a nut to tighten). I thought something might be wrong with the housing so I just replaced the entire rear housing and all components, fixed it for a minute but it's coming back slowly but surely! Maybe I need one of these in the rear instead of Tom Woods?