militaryrednek

i run the 30 series si/do on mine. love it. have made multiple road trips (ga to tx) and not bothered by the drone at all. only time you can tell is when i get on it. sounds pretty stock until then. mine are run straight out the back. but been debating about swapping them to a lightning style.

Blown Ford

As Otto said look at the mufflers that don't drone. I am partial to Borla's.



This one is in cab with the back window down an inch or so.