Re: Fred Gibb COPO
It is not proof positive that cars were built but there is a Chevy Engineering service letter dated 5/10/69 for the CAMARO 402 engines. It states that effective Aug. 1, 1969 all 402 engines will be identified with the "C" preceding the existing suffix code. Then it lists the codes including RPO L78 w/M40 as "CJL".
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