i tired searching but i only found people doing this on the G35 sedans (the newer body)...im thikning about doing this on my 2004 g35 coupe..would i get a better sound off this then if i added a magnaflow muffler?

also.which resonator am i pose to get?

http://www.magnaflow.com/02product/u...sp?shape=Round

im new to all this...help