[Stefano]

John thanks for the positive comments.

There were several plants which built Chevelles in the USA.

I believe all below built '67's.

A Atlanta, Georgia
B Baltimore, Maryland
G Framingham, Massachusetts
K Kansas City, Missouri
Z Fremont, California

This particular L78 was built at the Framingham, Massachusetts plant.

While it would be customary to expect the engine to have a VIN. I am not familiar enough with the time line and VIN stamping of each plant.

I have seen other 1967 Chevrolets (non Corvette) with original engines and no VIN.

There is such a small data base for '67 L78s, not many real, no questions cars to be had.