I have a dynomax 17769 (3" in/out) in a single exhaust app in my 5th ave. it had some drone, but once I added a 3" ID dynomax race bullet in the tailpipe it went away. for a dual exhaust app, with 2" pipes, I'd go the dynomax 17749's if you can fit them....they'll be your quietest "best performance" muffler. if you need it quieter, add a couple 2.5" race bullets in the tailpipe as resonators.