Hey if you're going to buy new, I would tend to vote for hypermax. They have a lot better customer support than ATS. Also Huff is known to several other guys here and is a dealer. He'll possibly give a small break, I don't know if he does anymore or not, but he's a great guy to deal with. Knows his IDIs too. Nothing wrong with the ATS unit either, think they have that Aurora 2000 turbo instead of the factory wastegated system that they sold for years. Their stuff is good, its just their customer service that could use some help in many cases. If you do want to buy ATS it might be worthwhile going through one of their dealers, as the prices are usually just as cheap and I have dealt with J&H Diesel in Mississippi, they seem to be good folks, as well as Central Motive Power in Albuquerque NM which has a great rep with Tom and Ryan and they helped dig up obsolete parts for my non gated ATS install. Banks may still have a few sidewinders but they are $3200 for the kit and set to be discontinued as of this month. They would be my last choice, especially for the $$$ Good luck, you're fixing to love your truck even more once it is fixed.