3 speed automatic column to 3 speed manual column?

So I have a 65 Valiant with the 273 engine and 3 speed column automatic and power steering.

I would like to switch from column automatic to manual 3 speed columnshifting now.

Does every 63 to 66 manual speed column fit or is there a difference between power steering and manual steering?
Do I need the a903 or the a745 for the standard 273?

Propeller shaft, clutch linkage and clutch pedal, that is clear