Where in PA are you located? I have 2 exhausts for sale, though both will be louder than an S type, but either would save you $1,300 or $1,600 over that overpriced Borla.
https://www.camaro6.com/forums/showthread.php?t=558532
https://www.camaro6.com/forums/showthread.php?t=556294
The muffler delete wouldn't affect the AFM valves at all and with the Hooker catback you can leave the valves connected and zip tie them out of the way under the car to avoid the check engine light.