Because of all of the variables involved, I think it would be best to get help from a custom clutch guy that the racers use. I know there's a quality guy that has been listed on here before, but for the life of me I cannot find his name now. These swaps aren't for the faint of heart I believe.

I think that is correct though. You need to use some sort of Chevy based clutch disk, but I'm not so sure about the pressure plate and how it all hooks together with the flywheel. The custom clutch setup guy would know the answer to all of these questions -- sorry I cannot remember his name, maybe someone here will?