Quote Originally Posted by corkey View Post
2007 prior were all post emissions, it could have a cat, but I, for some reason, don't recall.

I know more about 6.7L than 5.9L;\ I wish I could help you with this.

I'll do some research on your issue at hand.
Thanks, I'm almost positive they had none because I remember replacing stock exhaust on my dad's 04 and it just being muffler and resonator.

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