Just upgraded from 04 to 07. Want to open my exhaust so it can breath easier. Looking for suggestions for a muffler.

 

Muffler delete pipe. Sounds awesome!!

 

airflow.com has allot of muffler parts. This one is like 80 bucks.
This 10" diameter truck muffler is the standard choice for Cat and Cummins engines. For Detroit engines, use M100463. Or give us a call to find out about Donaldson's premium truck mufflers, such as the Silent Partner®.
Check them out if you like but I bought one off EB for 385 turbo back in 5" but the muffler was only 34" long. I don't know about you but I got over loud exhaust when I was a kid.

Mark

 

I had a MDP on my'03.......pretty narly....ahahahahaha.....on my '07 there is a Cat.....will the Cat and MDP be quieter than my '03

 

I have a Dynomax Bullet muffler and nop kitty and it sounds great. Little drone around 1600rpms, but above that no drone and sounds kick *** outside. My buddy says it sounds like his military Deuce did.....