I already said a few times here to get clarification for the discussion we could ask FIA. Open discussions are just that open discussions. I have presented original FIA documents to make my argument. I will leave it others to do their own research and ask their own questions to FIA.
Steve, FIA Appendix J provides to a manufacturer the info how NOT to build racing cars on the production line. Appendix J does not prohibit a maximum quantities or build a racing car on the main production plant.
Your logic is correct, Alfa Romeo could make 1000+ light weighted GTV cars in Arese/Autodelta. The problem is it never happened, because it is just stupid wasting of money.