Quote Originally Posted by AKMark View Post
I would guess you have this.


http://atptrucks.com/duramax-cat-ada...at-filter.html


I know a few folks running it, and plan to upgrade mine this summer.
No, I have a pre filter mounted behind the cab to the bottom of the bed rails.
http://www.thedieselpageforums.com/t...php?albumid=37

I have found the one your talking about along with a few knock offs. This looks shop built. Laser cut, crisp bends, well fit.