Any diesel truck with a automatic transmission behind it isn't gonna last because they can't stand up to the viberation a diesel creates. The Allison tranny isn't any better than the ones used in Ford or Dodge because they can't build a transmission large enough and still fit in a P/U frame. I would never buy a truck with a auto tranny every truck I have owned is a manual alot less troubles and more control of the speed and gearing. As for what Randy says about Cummins in other applications that doesn't mean a rats *** for Dodge sales Dodge can't build good trucks and with the Chrysler corporation being owned by Dialmer its nothing but bad news. Dodges are built like Freightliners so they can be sold cheaper than the competition most people buy them just because they can be had for alot less than a Ford or Chev. You look at the resale value of a Dodge its just like a Freightliner which is far less than the competion also you own one you own it for life because nobody else will buy it. The Dailmer corporation is run by a bunch of idiots that play with blocks on the floor would never buy one of their products. The stupid idiots have ruined Western Star trucks they took the plant away from the province I live in and my uncle lost his job. The reason why you see the ISB used in different types of equipment and trucks is they are a independant engine manufacturer they don't care who they sell their engines too. International/Navistar builds their own engines for their trucks only they won't sell their engines for use in MD Fords like the 650 and 750. Ford worked with International/Navistar on the 6.9-7.3 and the PSD to make these engines work in Ford light trucks and have been since 83 when the 6.9 came out. Its just like Mack, Mack builds their own engines for use in their trucks you don't see a Mack engine powering any other manufacturers trucks. Mack is the only manufacturer that builds all their own parts Engine Transmission Axles and Suspension. As for the ISB being a good engine for MDT applications its not the 466E is a Far superior engine its even better than the 3126 Cat the 530E is better than the ISC 8.3 Cummins. You see more International trucks powered by 466 engines working everyday almost flawlessly. Any guy I talk to that has a ISB in a MDT says its a POS it can barely get out of its own way and they would never own one again. One guy he delivers pet food he got rid of his ISB powered Freightliner and bought a 466E powered International and he's happier than a pig in ****.