Newbie here researching an Ambulance purchase that will primarily be used as a motovan. Upgrading from a regular express van. I have a question about the later 7.3's though (2000+ as I like the 4r100). I used to own a CC/LB OBS Dually that had a 7.3 and was a five speed (rare dually 4x4 as well). It was a 97 and was kind of a dog until I got a programmer on it. I mostly used the tow tune, but that little bump was just enough to make it immensely more driveable. Now with a big box on the back, and a lot more weight my first thought was "Oh, that's fine, do the same things I did before." But I just realized the van's don't come with intercoolers. So to get to the point, I see many of you have lifted your ambulances and are running larger tires etc. What happens when you get on the highway loaded down? Have any problems with overheating on hills? The vast majority of the time, this won't be an issue. However, I do frequently take trips where I'll be going for 10 hours straight and would like to run 70mph or so (until my gas card is maxed out I suppose) while loaded up without having to worry. I know the 6.0 in the later years is a lot more zippy, and I do have experience with bulletproofing them and like the transmission. Just rather not deal with it and the added costs that go with it. I doubt I would ever tow long distance. Would usually be one or two race bikes inside, then used for one or two night stays in riding areas or on trackdays/race weekends. I should note that I intend to leave it stock height with regular tires on it. I should be able to get to anywhere I need to go with a locker.