I've sold lots of 'em when I was in the truck sales business. Good little engines as long as they are used as designed. It's the smallest engine in displacement with the "Preimum Deisel Engine" feature of replaceable "wet" cylinder liners(just like the big Cummins engines) for ease of overhaul in the frame. The DT-360 engine won't be quite as "torquey" as the Cummins 5. 9L but should be adequate. The extra gearing will help.
I guesssing, but the GVW is probably 24,500 lbs. with approx 180 HP, Dana/Spicer 7,500 lb front and 17, 000 lb rear axles. The truck will have twice the GVW rating of a 1 ton pickup and twice the brakes, frame, susupension, wheels, and tires. I sold these to contractors to haul around a small backhoe, or loader, or a skid steer, etc on a tag along trailer and they did a good job. We rigged the trucks up with a flat bed, pintle hitch, tool boxes, and a big transfer fuel tank and pump to fill the tractors. Remember, your truck will also be almost twice as heavy as a 1 ton pickup and with the trailer you are much heavier. It will take longer to get up to speed and longer stopping times--it ain't goin' to be a hot rod.
Don't even think about "Bombing", if you could and I don't know of any place you could find the stuff to do it. Owners of medium duty trucks aren't in "hot rodding" so there's no market for it. It's not pratical with a commercial truck and will just cause problems on the entire driveline. Owners of most medium duty trucks don't drive them or are in the trucking business. It's a necessary production tool to deliver their product using hired drivers--just like a forklift is to a lumber yard.
Bill