I doubt it will be a help to you, but just to let you know there are various "weirdness-es" out there on old VIN's. My "46" is titled as a '46 complete with original appearing I.D. tag on the cowl but the cab is a '41 because it has a bolt in rear window glass frame.
Before you ask - No, it is not the result of weld repair exactly. I think the truck must be an assembly of various rust free parts from an assortment of trucks, i.e. a rust free running board here and a clean door there. I can only think the frame of the truck the restorer started with was from a '46 and when he found a rust free cab from a '41 he put on th4 frame and transferred the i.d. tag - which (I think!) is illegal, isn't it?
Is there a VIN number on your (mine too) frame to compare your cab VIN to?
