Nova Ignition Hardware inside steering column

I have a 1969 Nova, automatic on the column with damaged parts inside the turn signal housing.

They include the sector gear, lock cylinder, ign. key warning switch, switch clip, rack preload spring etc.

Actualy the car belongs to my 77 yr old mother and she hasn't been able to drive it for a couple of months now.

I haven't been able to find the parts.

I need help.

Thanks

Bob