Researching the location of the VIN and production stamps on the 69 400 engine reveals they should both be stamped on the deck surface of the block on the drivers side. How consistent is this? My fathers 69 w/400 is original to the car. He bought it in `72 and never pulled the engine until I did. Looking for the numbers I found the VIN stamp on the passenger side deck surface between 6/8 cylinders. All of my books state this should be on the driver side. Appears in `67 it would be located on the passenger side where I found these numbers. While I am sure this has been debated, I was unable to find any definitive information. What is the experience of others? Is it expected to vary being the late 60's?