It looks like mid 50,s to early 60's body. If it's a Grumman body they used to put the body ID tag up on the electric wiper motor above the windshield. If it's a Union City body they used the same number for the body as the serial number. It could be on the steering column between the dash & firewall. If it has the old stovebolt 6 (4 screws on the valve cover) then it is 62 on back. If it has the 230/250 engine it is 63 up.