My advise to you, keep reading and looking thru the posts, topics, etc., even the old ones, and you'll find your answers that way. Only thing I would say is that these are helmets created from scratch and molded, to then create those in Fiberglass, and NOT COPIES of ones already made or "COPYRIGHTED".
We don't give information that quick until you get familiar with the forums or you find the answer yourself.
Use the Force, think! If it's strong with you, you'll find what you want. Sorry if I was rude on that one, but that's the way it is. (To protect the innocent)!