Been driving behind some big cargo vans from Stelantis or whatever they are now and I can see a single beam across the rear axle with no driveline components. When did 1 ton commercial vehicles go FWD. It's new to me. Load up the rear and head up a wet hill...should be able to spin those front tires easily. They don't seem to be advertising it as I can't find any mention of it on their site, but pictures don't lie:
https://www.ramtruck.ca/en/promaster/features-design
https://www.ramtruck.ca/en/promaster/features-design