6 piston upgrade

[aany001]

Guys Im wanting to upgrade to C6 Z06 6 piston front brakes. I have installed a C5 Hybrid kit from CPP on the front of my 69 Camaro. Looking to keep the C5 hubs and uprights and wanna know if these calipers and rotors will bolt up. I looked at Kore 3 brake templates and I noticed there is 2 different bore sizes on the C6 Z06 355mm kit. I verified my bore size to be 2.776" on my rims and on the C5 hub. Does the C6 run 2 different bore sizes? Hopefully Tobin will chime in and clarify this for me.
Thanks in advance
Steve