Does it look like the doors have been swapped out for newer ones? I have a '50 half ton, and doors with side vents too. The cowl is original, for sure, has the yellow paint found in spots throughout the truck(cowl has drivers side vent, in front of the door) Think my doors were changed at some time. Vin plate does correspond to a '50, and has chrome on the speaker grille and glove box door. Anyone know if they put vents in the doors later in the 1950 production line?