Hi - the car currently has just a cat converter, with exhausts going to each side of the car. Appears the Reventon has exhaust that comes out of the rear of the car in the center area of the rearend. wondering what type of muffler people use. I dont need to put a cat converter. and the exhaust on the engine comes out right in the center also - maybe a bit lower than where it would show on rear of the car. Any advice or suggested brands and part name is appreciated! Thank you!