Question? Steering Colunm

Just recently purchased a 72 Duster 340 4spd roller but a couple things have be changed. It originally had Pwr Steering and somewhere along the way someone swapped in a manual steering box. Can anyone tell me if the steering column has been changed too to accommodate this manual box or was this an easy swap in the manual steering box from the Pwr steering gear. I would like to swap it back to Pwr gear but don't know for sure if something major has to changed. Thanks in advance for your input.