Steering Column got shorter....

This is a related question, so rather than start a new thread I will stick it in here... my 73 Duster had 4-speed, and manual steering. During the restore, I have decided to switch to power steering. The aforementioned plastic shear pin is sheared on my manual shaft..... any opinions on the wisdom of just sliding the shaft on down to the correct length for a power steering box, then using a power steering coupler to finish it? I also have a 73 Duster power steering column I could disassemble and get that shaft (probably not sheared, either) but don't know if I want to go through the extra work. There is plenty of other stuff to do on the restore!