EARLY 904 missing parts?

That’s as I expected. Thanks for confirming that. Been overthinking I guess. Any tips for the pump? Been alternating a slide hammer to both holes to no avail.

Nope.. usually a few pulls with a slide hammer will do it... not to sound silly but you have the slide hammer screwed into the threads in the pump and not deeper into the case? (have to ask... cause ya know... people)