Pitman part number?

Dana67Dart said
Teach a man to fish.

Parts Manuals – MyMopar
Download the 70-71 parts book.

Section /group 19 (Starts on page 699)

-Arm package, steering link gear-
Look for 19-27-02 (page 705)
(It is also on page 743, duplicate copy?)

From there your on your own.

Thanks for the catalog download. Will be useful as I learn and move along with the car. However the steering box I have bought, the year of it is unknown to me. It isn't an 1970 box.