A 1984 article in the Light Commercial Vehicles Association magazine (now Vintage Truck magazine) had the following information about changes in 1950 Advance-Design trucks: " . . . the floor boards of panel and canopy express models were changed to plywood construction. In the new construction a single panel of wood and five skid strips replaced thirteen floor boards and twelve skid strips. The new floor was positively sealed against dust leakage and the plywood made the floor 25 to 30% stronger than the former construction."
The March 15, 1950 Chevrolet Truck Data Book Supplement states that Panel/Canopy Express (Single Unit Body) Floors - changed to 1-piece, 5-ply. Prior to this 13 pieces of woods were used in the Panel and Canopy Express rear floor.
49bourbon can thus be assured that the responses he received need not be further verified: pickup wood is not the same as the wood used in any 47-55 Panel/Canopy-Express/Suburban truck.
Canopy Man's link to Mar-K is quite helpful. They do not specifically state the 1949 Canopy Express board kit has 13 pieces but the same year Canopy/Panel bed strips (1/2 ton only) come with 12 pieces, "to fit around the wheel tubs". They sell this kit for Canopy/Panel through 1952?
Unfortunately, they do not seem to sell Suburban plywood or later Panel/Canopy plywood;but, they sell 5 metal strips for the later Canopy/Panel plywood (the strips went on top of the later plywood, maybe in grooves?).
