This was just mentioned in another exhaust thread. You can talk to your local exhaust shop, and find out how much it will be to get a exhaust system build, using the muffler of your choice. You can find the muffler on ebay or at any of your local autoparts stores. You don't want to go any bigger then 2.5 in piping. Some of the better mufflers are Megan Racing, Borla, DC Sports, Skunk2, Apexi, and HKS. Also there are numerous catback exhausts available for our cars. GOOGLE IS YOUR FRIEND. There are many many videos on youtube. Just click and figure out which ones you like best and start saving your pennies.