I installed a Borla axle back system last year. No issues with fitment and dual muffler outlets lined up perfectly with quad diffusers. Nice deep tone which only got better with miles! Minor droning @ 70 mph in 8th gear but no big deal. Continue to be very happy with the system.
I put mine on last week, (Borla cat back and x-pipe). Very very easy to install, in less than an hour it was done, we were two and we had a garage lift. It fit perfect and the quality is good. The sound is absolutly awesome, it's perfect, classic Borla mean sound, i thought it would be too much but it's just what i wanted. It turns heads like never before lol!!