Just got an IMCO Pro muffler cat back system with 3 in pipe installed on 5.4 L. Sounds great. A bit more reponse with the throttle. Sounds like cross between magnaflow and flowmaster. They have a web site. Just FYI.

 

how much $ did it run & did you install or muffler shop, & what is the web site? glad u r happy with it

 

Offroad truck exhaust/lift/tire/wheel shop did it for 275 installed. Web site is (since the forum won't let me post web addresses) grabthepower (dot) (com).

There is a link on the main page (top right) that says something like "What will your's sound like?"

 

thanx, I'll check it out