Deleted my post instead of re-editing it.
Ok so I would be interested in doing this if I can delete the secondary cats with the proper Borla X-Pipe (
https://www.phastekperformance.com/2...pipe-60606.htm) and not have to tune the car. My buddy did a Corsa system on a bone stock '17 ZL1 and it was loud but not enough for him so he cut the factory system and installed straight pipes to delete the secondary cats only. Car sounded a lot more aggressive and probably picked up even more ponies. He had no check engine light and didn't tune it either.
So for me it looks like Corsa Xtreme + Borla 60606 X-Pipe w/ secondary delete will be my answer. (Too bad Corsa doesn't just make an X-Pipe/full cat back system like they do for their Vette systems)