I decided to "Build-and-price" a CTS-V Coupe to as close as I could get to my ZL1's options...
Turned out to be $69890 MSRP!!
...$3400 of that came from the Recaro seats that HAD to be ordered if I was to get suede steering wheel and shifter...satin black wheels were another $800...
Wonderful car...but I'm starting to see how the two were differentiated in the marketplace.