Mod name: Additional Heads
Mod Author: Oddball_E8

What it does:

This mod adds 23 "new" heads to the game that you can select for your soldiers. 16 male faces (10 caucatian, 2 asian, 2 hispanic and 2 black) and 7 Female faces (2 asian, 2 hispanic and 3 caucatian).
These heads are already in the game and used by civilians and NPC characters (including the special hero units).
Some of the heads have slight clipping issues with different hairstyles and facial hear, but only 2 that i know of (Sid meyers and Ken Levine).

Installation instructions:

Just extract the DefaultContent.ini file to your /XCom-Enemy-Unknown/XComGame/Config file.
Dont forget to make a backup of your original file.

Uninstallation:

Just delete the DefaultContent.ini file and replace it with the old one.
Worst case scenario, if you forgot to make a backup, delete the file and do a "verify integrity of game cache" check with steam, that should add it back.

Known Bugs: If you add this mod to an existing save game, some of your characters might become stuck with "head 0" and cant be changed. I suggest starting a new game if you feel you have to change the heads of every soldier you have.

Credits:
DarkOne - For the whole Nexus sites project.
NexusThorne - For finding out how to do this.
Firaxis and 2K games - For making the game (and then making us modders jump through hoops in order to make mods... thanx again)