There isn't a correct pump. Chrysler would use TRW, Federal, and Saginaw pumps on Dodge, Plymouth, or Cryrsler. Your pics show saginaw pump (ovalneck). You need the correct length belt for that pump.
I don't have a clue WTF you are working on so I can only tell you what I know... Aftermarket will sell you a lower radiator hose that is too short. Shoove it all the way up to stop on the water pump and PS hose will cut a hole in it.
