Wait have you done hour HW on this, are you sure that the C6s will fit on there, I think they are totaly different... and with 6 piston caliper you might be overdoing it.. my set up cost me 100$ and its about as good as it gets... when you lay on the brakes you often find yourself disturbed by the annoying kick of the ABS screamin for help so more powerufll caliper then that is highly unneeded IMO, but its up to you...
I think GTO calipers with C5 Brake pads are all you will ever need for the braking system on your car...
But hey keep us updated on that project...
