The NVG`s are not my creation, but something - again - fantastic from the good old Shawn Hull
They are not listed in the product portfolio as many seems to build models without pilots unfortunatelly
I`m sure he`ll let you buy some if you ask nicely.
He also has some pilot heads with open vizors, with and without mask, old and new masks. I`ll try to see if I can`t take a picture of the ones I still haven`t used.
I only stumbled over them by accident about 18 months ago, and after Emailing back and forth a bit he told me he had the pilot heads with open vizors etc. Later he also modified them to be with the NVG`s. They were sold as 2 separate sets, and although I wasn`t able to get a good picture of the unused heads, here are a couple that I used on finished models;