Here are my DMH's installed in an American Racing midpipe. Not sure if the Borla midpipe is exactly the same but it can't be that much different. So, add me to the list with Dr. Jkel and IROCanSS - if you can put your cutouts there you will never say again - I wish my car were louder!
2016 Camaro 1SS Hyper Blue 6MT NPP
2010 Camaro 2SS Cam/Headers/CAI/3.91 gears
476 rwhp/440 rwtq (sold)