Not sure about the diff in size.10th.
However I recently change my MII rack with a rebuilt MII from NAPA and got ready made hoses from speedway. The pump I had was like yours and the hoes pressrure was for a female pump fitting. I happened to have a newer pump and switched the pressure fittings. to use the hose they sent. They have a bunch of fittings. You need to find out exactly the fitting tyoe and size on your rack.
ahttp://www.speedwaymotors.com/Mustang-II-GM-Pump-Power-Steering-Hose-Kits,7270.html female pump fitting