F***in' proud new owner of a GHIG 2013 GT now, I have a friend who has had some Outlaw axlebacks laying around who wants to give me them since he no longer has use for them.. I called flowmaster, and they didn't seem too confident that I could be able to install them, but I take that with a grain of salt, they may just want to sell a new set of mufflers! I already have axlebacks installed, and it looks like the inlet piping to my mufflers is 2.5". I don't know how it couldn't work, and I was just curious if anyone had any experience/input with this. Couldn't I just have an exhaust shop hack it down to the muffler and weld it to the piping that is currently there?