I'd be careful with the FSWERKS systems. Even the stealth is known to drone. I got a ticket with the race exhuast so i ended up putting an axle back Rebel devil exhaust onto the FSWERKS and now I'm finally happy. No drone, not too loud, and still low deep and agressive. I still get backpressure burbles when slowing down. Granted somce you have an auto all exhausts will be quiter for you during daily driving.