WIW - 7-1/4 sure grip

I used 7 1/4 SG rears in my cars for many years, and they served me well. The problem with them, now, is the parts to repair/service them are almost impossible to find, and if/when you do, are expensive. I haven't seen any clutch kits for sale, for about 5 years, and the last one I saw, sold for $150.