I live in Colorado and within an hour of registering my 04WRX I got pulled over. The state patrol officer told me that I would have to install a stock exhaust or be susceptible to an $800.00 fine. I must note that the front license plate was not yet screwed on so I was drawing attention; front plate is mandatory in CO. Anyway it is a Cobb exhaust. I will begin posting some pics momentarily. I bought it in Las Vegas and it has quite a few after market modifications.