Farm boy,
That old truck looks great. The lettering looks like it wasn't too dark almost washed out, perfect.
Not to cut in to your project, I'm doing a '48 F-1 and the color is going to be Burnt Umber or a real dark brownish orange. Before the last couple of coats go on I want to put the lettering of my farm on the doors. After the finished paint is applied the only time you'll be able to see the sign is from directly in front of the doors. It should be pretty nice.
Good Luck with your signage,
Jij