I would like to convert our 1998 Ford KA 1.3 to power steering

beyond the obvious:
Power steering pump and associated brackets
power steering lines
power steering rack
Longer aux belt to allow for the pump

Is there anything else I need to change?

For instance are the wishbones the same with PAS, are the mountings for the PAS rack the same, is the ECU the same or are there sensors that need to be wired?

Please don't tell me to just buy a different car that already has it as I don't want to do that, I enjoy the challenge and it's probably cheaper to just fit my own PAS than buy a whole different car.

---edit ---

Just realized I was still sitting in the archive section when I posted this please move to the correct section.