Tim, I have had both the 1947/8 pickup tank and the 1947/53 Suburban tank side by side and I saw no difference in size. There are small differences in design, but nothing that would prevent you from interchanging the tanks. As I said before, the major difference is the filler tube that is connected to the tank. I am trying to remember if both tanks had the sending unit in the center, I believe they did. Maybe Marty can add some information. I saw approximately 15 tanks, including the one ton panel, 1/2 ton panel/suburban and the 1947/48 pickup.
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