Does anyone know if Chevy stamped serial numbers on the frame back in 1948? I just acquired a '48 business coupe (cheap) and the seller insisted the number was stamped on the frame on the driver's side. I have not been able to locate it. He said he even ran the number thru DMV to make sure it wasn't stolen. I'm thinking he might have been telling me a story. The firewall tag is long gone. Thanks for any help you might be able to provide.