I there Sam, My mane is Bill (Overpar73) and have the exact same car in a convertible 2013 ,and I'm on the same track as you with the mods, I have lots of questions for you. I will try and get with you when I get home on my personel computer to share some pics. Take a look at my build thread at and see what you think:
2013 ZL1 CRT vert delivered (Overpar73)
I would like to give you a call some time to go over your mods, very interested in some of the ones you have done already and any future mods your thinking of. I'm having my rotors and pads swapped out this Friday for some slotted and drilled rotors with ceramic pads due to the dust, that drives me crazy!! I was thinking about the chrome OEM wheels I saw on E-Bay, any thoughts on those or if I could find some of the 10 spoke black wheels?
I'm also a retired AF with 22 years, still working for the gov.
PS: Hows does the new exhaust sound? I was thinking about that mod also!