Yep That's what it looks like Brian, the only thing I can tink of is the Truck Cab Service film-strip was prepared for just that, servicing the cabs mechanical devices and the illustration on the VCCA thread was specifically created to illustrate the paint scheme.
Also the Service literature was, as you noted, 1947—1948 and there were quite a few changes in the early development of the AD. The 2/3 location with the break at the wipers simply looks better also. Taint a perfect world ya know!
Denny Graham
Sandwich, IL