Over the winter/ spring I will be converting the rear of my 2011 to a 13/14. I have already installed the tail lights but will be getting a bumper cover/ valance and finally an exhaust. Right now I have a stock exhaust on my 11 except for Roush axlebacks. I'm going in the direction of an off-road H or X pipe (leaning toward H for sound reasons) which brings me to my question. It's so hard trying to study exhaust via Youtube so I figured I'd ask you guys. I love the Corsa Sport quad tips but I'm not sure I want to spend the money on them since they are pricey (maybe down the road) especially because a friend has a brand new set of OEM quad tips off of his 2014 he is going to give me for free. Sound-wise I would like it a bit louder than my current set up so I'm not sure what an off-road mid pipe will sound with factory GT500 mufflers vs the Corsa sports. The free mufflers saving me over $900 right off the bat is heavily weighing on my decision! Thoughts??