Slant Six

I got the engine into the light tonight and was unable to find any pad with a stamping on it anywhere where the head and block mate. Do you have an example picture you can send me? Glad to take another look if I know exactly where to look and what I'm looking for.

It's sticks out just below where the head meets the block in the front passenger corner right where it would be under the alternator. If the alternator's on it, that's why you're not seein it.