too bad youre not running a single 3.5" exhaust or id sell you my 5x11x22 magnaflow. i love the way it sounds but its just a little on the tame side for my taste, even with LTs and no cats, haha. Guess Im not that old yet

 

Try a Waiker big truck muffler all most as quite as stock. 3 1/2 inlet & outlet 38 in long straight through design. Bought AT NAPA for 65.00.

 

too big i dont have that much room.

 

I'm loving this one
http://www.summitracing.com/parts/MPE-14416/

 

borla xr1