I bought the roush and it didn't last. It came off after a spirited driving session (120+). And I hated that you had to cut up the factory piece to install the new one. Also, i was really pissed that it took some of the other under-body pieces with it! There aren't too many options out there for the 2013 gt that i really like, anyone have any luck? i'm thinking about getting another one and just making some supports or something. Thoughts?