Ok, I think I have it figured out.
Apparently, non A/C
trucks have a different power steering pump pulley than A/C
A/C trucks put the power steering pump on the middle pulley. Non-A/C put it on the front pulley.
Look how recessed the snout is on the PS pulley:
This is a picture of my old '84. Hard to see with the radiator hose in the way, but again, recessed, and on close inspection, you can see the belt is going to the front pulley.
I must've at some point been baffled by the belt change after I did my Saginaw pump, since I took this picture. You can also see the snout of the PS pulley sticking out.
Even the original Ford manual depicts this. Non-A/C, the PS uses the front pulley. A/C, the A/C uses the front pulley and the PS uses the middle. The alternator on the AC setup is relegated to only 1 groove, whereas the Non-A/C got two.
So, I just need to track down a non-A/C power steering pump pulley (which is not available online that I can find) and pull it. Should be a few in the junk yard.