Doesn't the '0' at the beginning of the serial number suggest a 1940 year of production? As in, Paul's truck could have started life as a Cab 11? A fixed windscreen and the absence of those 1/2" plates under the floor suggests this might be the case? I read somewhere that some Cab 11's had Cab 12 front ends fitted later in their service life.....but can't remember where I read this!
Nice work on the truck so far!
Owen.