The person you need to contact is Sam McCain.
He is the original creator of the Myers mask and has a collection of over 20 different verons of the mask over the last 20 years for every film made.
The webte is
Choose the gallery option and you will see all of the different verons he has to offer.
I just ordered the Devious Veron 2 mask.
The mask will run you about 200 but it is the best I have seen.
This link is the veron I just ordered.
Sam is not the creator of the original mask.
He created the the first INDY Myers mask in 81.
He hasn't made a mask to every sequal. He's made a few H1s and H2s, an H4 mask which was made with the screen used as reference in front of him, and a line of RZ1/2 masks from every scene . He hasn't been making Myers for 20 years. His comeback was in 2008 with the HSS Shape 08.
Sam's a great guy who makes great masks