I have Ken. In fact I spoke with my local Banks dealer and he told me he isn't that crazy about the setup at least from the perspective of what trucks are like today. His comment was something like, save your money and consider upgrading the whole truck. The Banks installed was around $4000, about what my truck is worth. I have spoken to several folks with 7.3L and the Banks and while they like it, don't seem to be overwhelmed by it. My truck also has other issues like a front end that is almost bottomed out. The leafs need re arching pretty bad. The rubbers are almost touching (about 1/4") . I have a little guy to that is almost getting to big for the back bench seat.