hey wazzup, has anyone heard what the loudmouths sound like on the 5.4 V8 engine with stock cats? and if anyone knows what kind of muffler that would give me that loud high tone sound that someone could hear me coming a mile away i would appreciate it.

 

I haven't heard the loud mouths, but with 4 catalysts on your truck, it is unlikely any exhaust system will allow you to be hear from a mile away.

I have a Magnaflow that exits out the side in front of the tire (like the Loud mouth), and it sounds damn good! It isn't loud, but it is loud enough to let you know what you have.