That is funny. It feels like you're intentionally baiting me since it is not "Slitting hairs", The term you are using is actually called Splitting hairs.
The question was what is this engine . I would presume he asked because it was built in 66 but 318s didn’t come out until the 1967 model year .
The answer is it’s a 318 built in 66 for 67 models.
Simple enough ….