Ya.. I did some research, I called Kore3, and talked with Tobin. A really good guy and knowledgeable. I'll be getting the C5 "short spindle' kit, and using my stock drum brake hubs.
I really want to have a park brake and initially intended to use LS1 rear brakes, but those backing plates are being fazed out by GM. I may just keep my drum rears/ park brake assy. for the short term as discussed with Tobin.
I can always decide later what im going to do for a rear brake/park assy.
p.s.
what are you guys doing for park brake options?