E34 parts search

Looking for some help for my sons '94, e34, 530.

Inside the ignition switch, behind the key assembly is an cast aluminum cam, (for lack of a better term). After doing some research it appears to me that the cam is not sold separately, but as part of the "Interlock Steering Lock" assembly (Part 2 in the realoem link).

http://www.realoem.com/bmw/showparts...=32&fg=30&hl=7.

Does anyone know if this part is available separately, or does anyone know of a place that might have a used one?

Would like to get just the cam if possible.

Any help would be greatly appreciated.

Thanks