Way back when I had a 1969 Chevy 3/4 ton Longhorn. It was not a camper special,but it was heavy duty.I was building a garage at the time and I hauled many loads in the 8,000 lb range with it.It was truly a work truck.Loads consisted mainly of limestone and sand. And yeah it had a wooden floor in the box which was 8 and 1/2 ft. long.A 350 cu,in. engine,and a 400 Turbo Hydramatic trans.And a little hard on gasoline.