Not sure if anyone here is interested but there's a thread on Rennlist about the potential for a shop to rebuild power or manual intermediate sheering shafts for $100 or less. This would completely rebuild the u-joints on them. I don't think we can buy new ones anymore and the used ones are hard to come by and often have a lot of play in them.

forums.rennlist.com/rennforums/924-931-9...whos-interested.html