Power Steering Gearbox Fitting...What Size/Type?

From what I can see in that description, it has a control valve that takes a hose with a male fitting with an "O"ring. If that's the hose you have, it should work. The earlier vehicles used a hose with a female fitting and a double flared line that went onto a another fitting threaded into the earlier control valve. You can't mix and match. Get everything for whichever system you're going to use. I can't remember which year they did the changeover, but somewhere in the mid 70's I think.