After many days of researching, we found our truck at Martin Swanty Dodge in Kingman, AZ:

It’s a Dodge Ram 3500 Diesel Crew Cab Long Bed 4×4.  We purchased the Tradesman trim level, so there aren’t a lot of bells and whistles, but it certainly kept the price down.  Our salesman, Bacon, and the rest of the folks at Martin Swanty were great.

Now we can focus on buying the new RV!