Hi all, I'm tossing around the idea of starting on a 1930/31 Ford RPU build. I've been offered a deal on a cherry cowl and doors as a start. After doing some homework on the HAMB I've found some info on the cosmetic differences in the grille shells but not much more info. Are there any critical differences between these two years that I need to be aware of? eg. Can I for instance use a 1930 cowl with 1931 doors and a 1930 rear cab section? Any help with interchangeability and cosmetic differences would be greatly appreciated as I'll need to continue the search for rear cab section, fenders, running boards, etc. Thanks in advance.