I may have an extra throw out bearing support, I have to look to be sure , I have 5 gear drives and want to make sure I have at least one extra for my self before I make any promises. The guide pins have been discontinued for some time, you can use high grade bolts, cut the heads off and put a nut on either side of the threads and bolt to the disc.
If you have a spare bearing it would make my day. So far along with the throw out bearing, the clutch disc, the helper spring and sleeves are destroyed along with the pilot bearing. This old girl must have lead a really rough life.