Ive got a 2004 ford f150 FX4 supercab with the 5.4 im thinking about just cutting off my muffler and dumping into a turndown right there but i want it to be loud also i was looking at the IMCO extreme one chamber muffler as well what would sound the best running into a turndown. i want it to be deep and loud

 

If you want it to be loud in the cab, then go ahead and have the turndowns installed right below your cab. I had flowmasters with dual pipes running out to the bumper, it wasn't loud enough, so I cut the tail pipes off right off after the flowmaster and now it sounds really good, and loud!