Yes, they do.
You can find what it should be on two tags on the car, one up on the clutch/brake pedal footbox (front trunk), and one on a tag in the back. I think both say "Moteur No." or something.
The motor number is stamped on the block, on the back, left side, just below the heads, facing aft. It should match the data plates.
It might be painted over with the
blue black paint.
Nice looking car. Is it new to you? (It's in ProvaMo).