hi, i'm planning to change my muffler for my r34 gtt cuz its running on stock and just want to know which muffler i should get. i dont want it to be too loud.. like u can hear it from da end of da st .. n dont want dodgy sounds.. any advice?? or... should i save up to change the exhaust instead? is dat more worth it? i onli have a cooler and the rest is all stock =]