Thanks Tilly.
I have workshop manuals and parts lists for the car (unfortunately not including the clock spring part number) I have sourced one in WA and we will be in the area on Monday so will get it (and other parts if I see them) while we are there.
Updates will be posted.
Oh, I forgot to add that I replaced the Brake fluid last week also. With no service history and obvious lack of maintenance, I want to make sure everything is serviced, so I know when everything is next due.