Darrin: Had one just like that except for the double rear doors, and had a gasser 400 engine. Was a Centurion Conversion. Bought it out in AZ and the daughter drove it back to Ohio. Just by Piqua on I-75 it throwed a rod thru the side, didn't have the flames on the side but they were sure coming out the rear, grass on fire in the median under it, loaded with 80 gal. of gas, just filled up. At least ten semi's stopped along with the EMS from Piqua, they pushed the truck out of the fire, at least 15 fire extinguishers were going off, fire out, turned around and everyone was gone. Still have night mares about it after ten years ago. State Patrol showed up about a half hr. later.
Put an power rear seat in it, just push a button and it made into a bed.