Replacing power steering with Manuel steering

Little Hi-Jack question since the guys who know are here....

Steering column shaft.

Which is longer, the upper, lower or both shafts longer with manual vs. the PS shaft?

I have 70 Duster with manual steering but the splines for the steering wheel are kinda 'messed up'.

so .. Are the upper (half) shafts the same length with PS or manual?

Thanks in advance.