So I ran into a fella who has an AD fire truck with less than 4,000 miles on it and I asked him if he could send me a pic of the valve cover with the original script. Here is what he sent me.
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DSC06610.JPG (196.54 KB, 186 downloads)

1952 5-window - return to "as built" condition | 1950 3100 with a 235 and a T-5 transmission