I like how some of the vanilla hair looks when it's under a hat. I recently just threw together a little mod where I made a hat with no mesh so I can just see the hair which is still shaped like it's under a hat.

I'd like to know if it's possible to take those meshes and turn them into actual hair. Do the meshes exist in the .bsa or are they part of the original hair model and only appear when a hat is equipped?

To help you understand the meshes I'm talking about, here's somebody http://fallout3nexus.com/downloads/file.php?id=3807 I'm talking about the hair under the hat.