I would like to do them just for the sound. In all sincerity, I hate the way these cars sound and I have been through more mufflers than just about anyone out there. With tubes, it is an entirely different deal. I have a friend with a shop and a lift. I could do them there, although he swore that he would take the engine out of the next '11-'13 that wanted to do long tubes. LOL. I would need to find a set that is compliant with my tuner's needs. That means a set where the O2s are not too far downstream of the heads. I think Kooks puts them in the primary tubes.
Mike
I think the kooks are in the collector but the are more of a mid length than a longtube. If I had to do it all over again with the issues I had I would go that route.