I own a 1947 3 window 1/2 ton now. I am buying a 1949 5 window later this week. I guess if a 1947 5 window exists i will keep searching for the one
They exist and are a little different from the later year cabs, including gauges, under bed gas tank so cab does not have filler hole, the 47 and early 48 came with a
3 speed floor shifter with parking brake lever located next to the shifter so no left side parking foot brake.
firewall is smooth] with no raised strengtheners and the 47 does not have a cowl drip rail. (notice the steering column hole will not accept the 3 on the tree shift mechanism, this is 47 and early 1948 only)
If you don't mind non-original and want to convert your 3 window, use any cab from 1947-1950, not many people will know the difference and you will have more choices.