Sounds like the cab is not a '47.
Is the windlace around the inside door opening held on by screws or does it slide into a track, spot welded to the cab?
Does the cab have a left side cowl vent door?
With the lever action shocks, your frame can be either a '47 or '48.

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