I've run across several C4500 Kodiak 13 passenger buses (see pics). A few w/ 300+hp Duramax/Allison.
My criteria:
Small camper with the standard RV amenities.
Towing a 3000 lb Baja pre-runner on an open trailer.
Possibly a Uniijoint 4x4 conversion down the road if applicable (although the...