>>The pressure plate issue can be easily fixed with a steel insert<<
I was already planning to make an insert for the galled pressure plate. Seems simple enough. As for the "quiet clutch" option I think it was Rivera that sold the friction plates with the balls but I don't see them advertised anywhere now. BDL sells a clutch pack, sans balls, they call a quiet clutch (pictured below) but if you look closely you can see these friction plates are stamped "Energy One" which is a company that manufactures racing clutches. In any case it wasn't the noise that was the issue it was the premature wear on the clutch basket and I think the updated Ultima basket with the inserts will cure that. I'm just a bit concerned with how they mounted the inserts. I assume it's via some type of adhesive so I'm hoping they stay put.