Doing alittle research and finding the the truck brakes are the same as the C5 brakes but about 15 dollars cheaper with core and about 60 cheaper without core the only difference I can find too is they dont have the fins for additional cooling

Truck brake PN for autozone C623 42.99 caliper

 

then they are not the same are they.

I did notice the rear calipers on my 04 SS silverado look veyr much like rough cast c5 front calipers

 

looking into it they are the same piston size rotor size ect just the vette ones are lighter

 

i believe that because the vette ones are pressure cast vs plain cast. they should be stronger too.

 

the reason Im looking this up is im going to Hydroboost and I have a 2003 2500 in my driveway that im parting out and taking the hyrobooster but then thought about the brakes too just for gee wiz

I plan on doing the C6 Z06 brakes