Manual Steering questions

the manual pitman arm that moves the steering is different than a PS pitman arm. 73 up is different than 72 lower. . I suspect you are running all 74 steering stuff since you have a factory 74 PS box currently?

I did the same thing. Got a manual box from early 70s. Took me 2 trips to autozone to get a small spline (fits manual box) 73 up pitman arm. All 4 boxes they pullled out had the same part number but 3 out of 4 were the wrong part, cause the whole operation is a front for some sort of cluster fk.

I could be wrong on all of this but I dont think so.