Steering boxes

I have a 74 Duster I want to put a manual steering box in.
I have found a couple of B and E body boxes close to me and I think they will bolt up but are the splines the same?

the manual steering box will fit.

two things needed,,

one....the power steering shaft is shorter then the manual steering shaft also the splines are not the same... can get adapter from flaming river to make it work... or get manual steering column shaft..

two..you will need a new pitman arm..the 73 and larger will have a larger diameter spline then the manual steering boxes...get a manual steering pitman arm for 73 and later A body...

Or you can get a large spline manual box out of a van.

Thank you both very much!