Hey Ivan, In, 69 there were 546 L-72 B body chevy. built with the COPO L-72 engine option, one of the suttle ways to identify these cars is to check the size of the fuel line, all L-72 cars have a 3/8 fuel feed line, besides I have a notarized affidavit from the selling dealer stating that he sold this car and it is a real L-72 Impala Custom Coupe. Hope this helps clear up any questions.