Another thing to remember; A 1956 model vehicle does not have a modern VIN number, it will be a serial number, so when you get to talking with an idiot down at the DOT your number isn't going to fit their criteria of "VIN number" which is a 17 digit number that was standardized in 1981. https://en.wikipedia.org/wiki/Vehicle_identification_number
What parts do you need? There are several of us here who own '56 C 600's, and many more on the FTE website, and may be able to help. Regards, Mark.
Gl*** is the same, emblems are available on ebay and the FTE site. http://www.ford-trucks.com/forums/forum41/