WTB mopar A-body 73-76 Power Steering Shaft

highflyer said

just use the 73 pitman arm..the 72 is smaller dia at the shaft where it connects to the box..73 is larger dia..j

Click to expand...

Not to hijack but educate me.
I have a 73 duster with PS.
I bought a column out of a manual 73 and a manual box out of a 72.
How much problem am I going to have with the pitman arm???