Some of the suppliers have illustrations which may be helpful. I have a few related diagrams that I could scan. If you want to send me a PM with an Email address, I could send them over to you.
I don't know how close the 38 car and truck were in regards to the sheet metal but on the sedan there is a central chrome piece that slides over the two hood halves and attaches at the front and the back. This forms the hinge arrangement.
