I found these fragments of the build sheet for the car under the driver's front seat. There were only fragments of the sheet left, and they were dry and fragile from age. It is marked in the lower right hand corner Production Broadcast Ticket, Form MD-16005 June 1959. The only code that is legible on the fragment is the code for the axle, which is 3.
I hope to find an intact build sheet on the car. Sometimes they are found under the trunk mat or behind the air-conditioner evaporator. I found an intact one behind the air-conditioner evaporator on my 1959.