Welcome Joey
, Did you mean a V10
or diesel? They are different things. A v10 is a gasoline engine and a great choice, a diesel is either going to be a 6.0 or 7.3 if it's 2003 or older, and both would be only if you choose a Ford. There are good offerings from Chevy as well and a fair number floating around, just less than Ford.
Good luck, I recommend keeping an eye out here and in the 'vans for sale' thread over at Expedition Portal in the 2/4 wheel drive camper van section.