I have already said that it's not for game assets. It's for CGI video and certain special effects I wish to add needs this text inset into the helmet. Why I need to do this isn't the question, but how is. (Don't mean to sound like an ass here btw)
What if you just do it with only the displacement map? If you're using Max I'm not sure how exactly it works but in Maya or Softimage you can have the mesh be displaced at render time; you'd model the helmet with no letters, and the displacement map would create the inset of the text when it's being rendered, using as many…