Rear main puking, clutch slipping, brand new clutch

[FailureCoach]

Ok I tried to search, but came up empty. I bought a 1991 with 31k miles, records, but.... Apparently a Corvette shop in Florida put a new clutch, flywheel, and balanced it, at least according to their sublet line on the invoice. The older gentleman declined the rear main repair, I believe he was declining in health,and maybe didn?t catch that?s why the clutch was slipping in the first place. So now I have to fix this. Can I buy just a new clutch disc, or do I need a new kit? Not trying to be cheap, just don?t want to throw money away if I don?t have to. Second, best source for the rear main? Jerry?s Gaskets has the whole plate, but states old stock, and seal should be changed. Thanks for any input. My 8th C4, first ZR1, it shares garage space with my ?02 Z06. I?m not new to Corvettes, but I don?t want to screw this one up.