The oil pump doesn't look strange to me. That looks like a pretty standard slant. I hear they use to put them in firetrucks, boats, and generators. I am kinda curious what the carb is since it has what looks to be a side inlet 1 bbl carb.
Yea, I have a 73 slant from one of my dusters. But never even blinked at it. Yanked it out drove around back and dropped it off the tailgate with disdain. Sitting on the back 40. Ran like a top, probably locked up now. Kind of stupid to let a perfectly smooth running mopar sit and lock up.