04 6.0 diesel straightpipe??

I have a muffler delete pipe on my 03 6.0L from pure diesel power and the truck sounds great! Most muffler shops around me can't bed anymore than 3" so you might need to find a heavy equipment shop or semi repair shop and seeing if they can make you some delete pipes. http://www.youtube.com/watch?v=yact2YrNTnw This is a video of my truck going through its idle cycle (from the tuner) But it you can definitely notice the that it's not a stock exhaust.

you cant legaly cut off the cat,wont pass inspection,you can do a true duel on it ,but you will have to add a cat to it,even with mufflers it will sound great.

ya just cut the cat and muffler off and weld a piece in thats how my 03 6.0 diesel is and you dont have to go through any inspections

Hay smart a$$,if he lives in a state that requries a state inspection it WILL NOT PASS,as for the way you said you did yours ,wait for it,back pressure will bite you in the ass.