Ruth,
I believe the plan is to use off-the-shelf GM parts (clutch/pressure plate and starter). Not too expensive either. LS compatible components. No need for the KEP components.
Back to the clutch, etc. Here's preliminary info on the stock part numbers based on our perusing the GMPP online catalogue.
Standard Flywheel 153 tooth
P/N 12571611
LS3/LS7 Clutch disc and pressure plate
P/N 24248985
LS Series Starter
P/N 10465385
Does anyone know. . . can the bolts that hold on the as-shipped but non-usable stock flexplate be reused to attached the replacement flywheel, or are the bolts a onetime use item?