Just replaced the stock muffler with a Flowmaster 40 series muffler. I am using 2.5" mandrel bends for the exhaust and have only at this time replaced the large muffler section. I plan on soon completing the rest of the exhaust including the resonator right at the end of the exhaust system. It has a great sound on startup and a little rumble on idle. It isn't very intrusive upon normal driving, but I think it will be a lot more agressive sounding with the resonators removed. For a bit deeper tone I will maybe change the muffler out for the Flowmaster 50 series SUV. I will try to get a soundclip of the exhaust on startup here shortly if I can figure out how to get it posted.