Cadillac CTS-V front factory rotors and 6 pot calipers, longer ARP bolts and 3mm spacer. The rotors center bore was opened slightly to 70.5mm. The Factory Bolts for the 6 pots had to be cut shorter by 1" so it does not rub on the rotor. CTS-V rotors work perfect. I see a lot of folks buying 5 Gen Camaro Rotors.