69 Chevelle engine block numbers

[Bad69Chevelle]

I am buying a 69 Chevelle SS 396, the guy says that the motor is matching numbers but the front pad numbers were machine down when the block was bored to a 402. It is a code 72 Monaco paint car so I am pretty sure it's an SS so my question is. Did they stamp the partial VIN anywhere else on the block, it is a Fremont CA car. I have heard some plants stamped by the oil filter as well, is this true with Fremont or another plant specific.
Thanks Larry