I'm running a Double Dynamic, Dual Disc, Stage 47, Mega-Blast Ultra-5.
I used an FRPP M-7563-C302N pressure plate, billet steel flywheel with replaceable heat shields. The whole assembly cost me $600 to build in 2011.
The flywheel did not have the replaceable heat shields, I bought those and the floater from Crower and added them myself.
I found Google was my best friend when I was searching around for pieces. I suspect you might be able to do something similar if you use Google to search around also.
This is what the assembled unit looks like
Ed