Thanks everyone for your comments and advice. I plan on keeping the truck original and in his work clothes. I'm pretty new to the model a hobby but it doesn't seem that there are too many around with this kind of vintage patina. I'm making everything mechanically sound so it is a good / safe driver. The engine has been rebuilt and I'll be replacing the roof, interior, re-silver the headlight reflectors and replace all of the glass. On the box I plan on treating the wood with a 50/50 mix of turpintine and lindseed oil.
Dave