Cool deal, and about that exhaust, andrew has done it. I don't remember what it is called but its some kind of electronic actuator. Think of it as an electronic wastegate that you can tell to open or shut. With it shut it sends the exhast back through the muffler with it open it will just dump the exhaust out below the car. He has his welded underneath his 02 sensor pipe. He was sick of the bullshit tickets so I don't blame him.