My Borla exhaust with 300 miles of use is for sale (fits the coupe). I very recently installed the Kinetix cats and Borla at the same time, and my wife does not like the additional rumble. The sound doesn't seem too loud to me, but that's part of being married!
The exhaust was installed by Luther Infiniti in Minneapolis, so you can check with the service manager to confirm anything you'd like.
Please PM me. I'm thinking of selling it for $500 including the shipping via UPS ground (less if you pick it up in Minneapolis).
Thanks!
-Jeff

jjellyneck