I have a 1969 SS Camaro with the RS front end. I bought it with a 396 big block in it. The tag on the firewall says it's an X-11 car. Did any of these come with the 396. I've been told by several people locally (who knew some history on the car), that it is an original big block car. It had all the 396 badges, and from the shape they were in, I would say they where original 69's. Any help?