Never been a VW kind of guy but I sure as heck can appreciate the work you've done and I immediately thought "Prowler" when I saw it. It's really cool. But on to the Truck.
I cut my teeth on dump trucks so I get a huge Woodie when I see a Big Ol'Goodin like yours. You didn't say it has a 270 but that's my guess. I don't see the 2 speed switch on the shift lever either. What brand is the body/hoist? We want more pictures.