The aluminum Dually wheel set i found with 'D' tire height have the wrong offset to work with the axles and rear box.
I've kinda been kicking around the idea of a vehicle with something using WPL parts for like a Dig (shiftable 2wd / 4wd / lock axle) function, but hadn't come across any good ideas. Mostly wanting it for a Part-time 4wd feature, probably don't really need the actual Dig function.
https://youtu.be/XAe3YX4vKQc?si=5Xzy_jZMbBxIBfso
Even with all the excessive driveshaft length available to install one here, Uhaul probably isn't the right car to put a similar units on. This trucks long rear overhang and bad departure angle probably wouldn't work well behind a Sling-back Wrecker that those wheels do fit.