Hello. I am new to the group. I am in the process of purchasing a 1967 230SL W113 Automatic. The engine number is 127.981-12-004808 and the And the chassis number is 12-017245. Are these numbers supposed to match? It is an original owner car that states the engine has never been out of the car. I can also surmise that it was built between June and July 1966 but would like to narrow that down. I understand only 185 were made. Is there a way to determine what number this car is? Thanks in advance, Dan