So I have a quick drive shaft question. What part or parts of the DS is different between an auto and manual? The reason I ask is I have 2 DS’s the auto one appears almost new no damage, rust, or wear of any kind that I can see and the carrier bearing looks to be in perfect condition. Whereas the manual DS has seen better days. Now I know I can use whichever carrier bearing I want but my question is can I use the auto drive shaft and just swap on the manual intermediary shaft from the manual? Also, has anyone had their DS lightened? I have heard that a lightened 2 piece DS is the best of both worlds so to speak. Thanks for any input.