Power steering box difference

[Kevineng]

I have a 72 challenger, the original shaft is 1 1/8" Can I install a steering box from a 73 with a 1 1/4" shaft? Are the pitman arms different between the two? (obviously other than the diameter)

 

[Challenger RTA]

I have a 72 challenger, the original shaft is 1 1/8" Can I install a steering box from a 73 with a 1 1/4" shaft?

Yes.

Are the pitman arms different between the two? (obviously other than the diameter)

Correct. You are referring to the pitman arm.

 

[heminut]

The boxes are interchangeable as long as you have the correct pitman arm to go with it.

 

[Kevineng]

Ok, thanks.