This mod add a preset with the Leonida's face to Imperial race.

I simply exported the face from this savegame and created a esp with CK: http://www.nexusmods.com/skyrim/mods/964/
Thank you Sutoko

To change race is strongly raccomended to use "ShowRaceMenu Alternative" by Seb263 for not losing perks and character progress!! 
http://www.nexusmods.com/skyrim/mods/20394/

I would suggest some good mods for improve the "Spartan" experience: 
"Spartan Sword from 300": 	http://www.nexusmods.com/skyrim/mods/11631/
"300 Spartan Hoplon Shield": 	http://www.nexusmods.com/skyrim/mods/5134/
"Leonidas shouts Tonight we dine in hell"	http://www.nexusmods.com/skyrim/mods/6733/
"3rd Person Combat Camera"	http://www.nexusmods.com/skyrim/mods/20663/
"Cloaks of Skyrim"	http://www.nexusmods.com/skyrim/mods/12092/
"360 Walk and Run Plus"	http://www.nexusmods.com/skyrim/mods/34508/

Enjoy