I am doing a GSR swap in my civic and boosting it. i am going to need a custom three inch exhaust made by a muffler shop. now the thing is is what kinda of muffler should i buy. the reson i ask is cause i was wondering what some peoples opinion would be. i want something that is deep and aggressive not something that is high pitched and nasty. i know this kinda sounds ricerish but i'm not trying to be. i never bought just a muffler, i have only bought a full racing cat back exhaust before and i am selling that to my friend so i can buy more stuff for my new motor. if you can give me some ideas on this i would greatly appreciate it. thanks!