Anyone installed a Gibson cat-back side exit (behind the wheel) system on their 2012 Ecoboost, either alum or stainless? I'm curious as to whether any mods had to be made or was it a simple install, was there an mpg increase, satisfaction level, etc.

Thanks

 

I had the in front of wheel dual gibson on my previous 2000 & 2003 Chevy Silverado's sounded great and was a simple bolt on! No modding