It is looking good! I don't believe anyone has made an "accurate neck-ring" available, One would probably need to be scratch built or your existing one modified
The fiberglass Disney suit version is terribly inaccurate as well.
Not a dumb question..the head, torso, arms and shoulders are vacuformed. the hands , horseshoe ring around the back of the head and neck ring/collar are resin casts.
I did add more detail to the back of the arms using strip styrene, as the forms were missing this detail. The front coupler in the belly will be replaced by a resin cast, as this lacks detail also.