Steering unit question

[TK73]

Is a '73 B-body unit the same as the '71 C-body??

[John_Kunkel]

The boxes, themselves, will interchange but I believe the Pitman arms are different and they won't interchange due to the difference in shaft diameters.

The change in diameter came in '72.

[RallyeMike]

Change in 72..... so then a 71 C-body PS unit DOES have the same output shaft diameter as a 73 B-body, just the pitman arm needs to be swapped? Or after 72 the shaft diameter becomes the same?

[BrianShaughnessy]

From what I can tell the boxes are the same large sector between 71C and 73B.    Moog K7072 pitman for C body and K7076 pitman for the B.