I have no idea where the number is on the frame. I've been told they're supposed to be on the drivers side between the firewall and frame horn. I've had the front sheetmetal (fenders, grille, core support) off of mine and did not find any numbers, I've never had the body off so I don't know if they're under there or not.
Damn, is that what it is??? I found one in Minnesota, I thought someone had added the back windows to a sedan delivery...now you got my interest and I'm trying to buy the one in MN cheap....tell me more!