First off this is my first post and just want to say Hi to everyone! I got a stock 08 GT 5spd and I'm getting some of those new Flowmaster Delta 44s. I'm not planning on doing any other modifications (i.e. headers, tune, etc.) until my warranty runs out. My understanding is that mufflers by themselves are not going to make any real gains and even with the X-pipe I'm not going to notice much but I read it does effect the tone of the exhaust. Unless the sound is "dead SEXay" or I'm getting NOTICABLE performance gains I will not want to pay extra right now for the pipes. Any opinions or knowledge on the subject would be much appreciated. AMERICA!