I'm looking for a single tipped muffler for 2.5S. Since I like to drive quietly, I don't want any muffler that makes any loud sounds. (I'm just going for the looks). Plus, the muffler for the 2.5S is way too ugly. Muffler with no sound plus an improving performace will be even better. Any recommendation? Also, what is the difference between an exhaust and a muffler? Sorry, I'm a newbie.