The engine serial number is different than the car serial number on the engine. The engine should have two serial numbers.
Confufused yet? YET ?!??? LOL
Engine serial number;
http://www.hamtramck-historical.com/images/TSBs/1969/69-25-1_page6.jpg
Car serial number on engine;
http://www.hamtramck-historical.com/images/TSBs/1969/69-25-1_page8.jpg