Probably not
This is my world. I supply plastics injection molding equipment to injection molders here in MI. There are hundreds of suppliers to the automakers. Each having a particulr part or parts for a specific platform. Finding out who makes a specific part for a specific platform will be very difficult as many companies are typically involved (one molds the headlamp housing and metallizes it, another molds the lens and assembles the halves, another company adds the sockets, etc, etc, etc... ... . )
Do you have a specific part in mind?
Todd