73 and Up Manual Steering Box

If any one is still interested in this fix I figured it out for my car at least.
I have a 73 Duster w/power steering, I have an older manual steering box to put in it. I ordered a 73 manual steering pitman arm. It is shaped just like the powersteering arm, but has the smaller hole for a manual box. So a 73 manual pitman arm was all I needed to swap a 60's manual gearbox into my 73 Duster. FYI