This certainly looks like a Hall GTC but on a newer chassis and cargo doors in the back. I've never seen anything like this. I wrote to the seller and they said that it was always just an empty van. They ended up selling the engine and transmission out of it and keeping the rest as a storage shed.

350 Chevy Rebuilt crate engine with 0 (zero) miles + 400 automatic transmission. Installed in a 1980 21' 1 1/2 Ton Fiberglass Dodge Dually Sportsman. This van was originally bought by my husband when it was 2 years old. He recently decided to put in another Chevy engine and transmission but..........project was never finished! The engine has zero miles, transmission is not new but is in good condition. The van makes a great storage unit, and being fiberglass will last forever. Selling for the engine and transmission, but it could be driven home. It is for sale locally.We are 1 1/2 hours south of Las Vegas