There might be another option, the plug that screws into the pump housing Is removable.
Can I just replace this receptacle with an older version that matches the hose end?
When I say plug, there's a sleeve that screws in to the Saginaw housing, then the hose screws into that.
I guess I have a 76 up version that takes a lip with o-ring.
If I could find a 70 version that accepts the inverted flare style?
That's what I plan to do if/when I get the mag engine & power steering pump swapped into my 72 pickup.
I got that plug from the junkyard from a similar year ('72), and it looks identical to the one I took out of the '99 magnum PS pump (except for the hose threads, of course). So now I should be able to use my original '72 ps hose, with the magnum ps pump.
There should be a shuttle/spool behind it, with shims to set the pump pressure.