What R2Dan said. Btw, Darth Stone´s helmet and armor were way too large for costuming purposes. He scaled his Vader concept helmet using a regular Vader helmet, which made it really, really large. I had the opportunity to see a set of helmet and armor, and building a costume may have resulted in having to use a mannequin about 20 percent larger than a standard Vader. The first concept Vader made by JRX suffered from the same problem, big bobble head.