If you are looking for an ultimate brake system, look no further, this is your dreaming kit and I am sure you know better than me once your ZL1 is equipped with this CCM brake kit, you probably don't care nor have to wait for a new G6 Z28.
http://www.racingbrake.com/Camaro-Z-...rccb-gm-02.htm
With our current inventory we are offering a very special deal so you can expect to get this kit at @9K, and if you keep the front ZL1 OE calipers you can save $1K, and if you only need street driving our XT910 is the excellent street compounds, well proven in GTR community, you don't need to pay $650 for OE pads, so you can have this kit for $8k.
RacingBrake is the pioneer and leader in building affordable CCM brakes for any budget, from just the front axle rotor kit, to the complete system.
http://www.racingbrake.com/Carbon-Ce...kes-s/7196.htm