Manual to Power steering conversion kit

Pretty sure you will need to change the column (or at least the shaft). The PS box is longer than the manual box, so there is a difference in column length. When going from PS to manual steering you can just add an extension to the PS steering shaft. I don't know if there is an aftermarket kit that will do what you want.
I'm guessing the best shot would be an electric power steering with an updated steering box? $$$$!