I have a set of these in matte black with Falken RT660s mounted for sale. The whole setup was used for 2 sessions at Mid Ohio. They're basically brand new and are fantastic, but I just sold the car and have no use for them.
https://www.camaro6.com/forums/showthread.php?t=596747
This really is the best looking setup I've seen on a ZL1, and honestly this thread is why I bought them.