I installed the lethal resonator delete H pipe with roush axel back on my S550 GT and it is absolutely amazing badass sounding. I just love the tone of that combination. It is very loud driving in traffic but cruising on the highway it's not bad at all. I think it sounds more or less like the need for speed shelby mustang. Check out the video on instagram @newyork_mustangs and hit me up with a follow if you like.