engine ID# versus veh serial #

Pics would help, as the terms sometimes get confused. ^ What The Princess said above. More clarification.......
The last six digits of the stamped number by the oil pan rail, should match the last six on your dish VIN plate. The cast in numbers on the side of the block have nothing to do with the car, as the car didn't exist yet when the block was cast. They only identify the displacement of the block and the date and shift cast.