Sorry about that pic, apparently I'm image challenged. I've got everything off the back of the housing except for the Return Line Hose connector. I'm assuming that is threaded into the pump and keeping the pump and housing together.
The Return Line connector does not have a nut on it, it appears to me that it is welded or braised to the housing. Although when I pull up photos of parts on the web such as Rock Auto, they show this part with a threaded end and a 5/8" or so hex to thread it in and tighten it. I can try to just unscrew the connector, apparently I can buy all new parts anyway.