Quote Originally Posted by Alhanelem View Post
I do modeling myself. I don't lack any slight idea on it. This doesn't change the fact that art assets are almost never, ever modified post release of a title.
Based off what you are saying about how difficult this would be, I highly doubt you do any modeling, or if you do you're an amateur at best. It would take me 2 minutes to take the helmet off this without changing anything else, I'd just make another texture with the helmet transparent. Then all that would need to be done is modifying a few flags for the item and voila, done.