Why don't you just use the adapter which allows you to use a ps column with a manual unit. That is what I am using and it fit and works great.
Well I have manual steering and a manual column, but it looks like some one cut and welded the main shaft at some point in time. Possibly to convert from power to manual, not sure.
I would like to replace the column or at least that shaft, just to be on the safe side.
If I can not find a decent used column, then I may look at using a power column and the adapter, but that is a little more than I would like to spend right now.
Jas