Ferrari:
https://www.the-blueprints.com/blueprints/cars/ferrari/
https://drawingdatabase.com/?s=ferrari
Alfa Romeo:
https://www.the-blueprints.com/blueprints/cars/alfaromeo/
https://drawingdatabase.com/?s=alfa+romeo
Lancia:
https://www.the-blueprints.com/blueprints/cars/lancia/
https://drawingdatabase.com/?s=lancia
etc:)
https://www.the-blueprints.com/blueprints/cars/
https://drawingdatabase.com/category/vehicles/cars/