Need pre-made 3D Head features changed without changing UV map

I have a 3D non rigged and rigged head I need features changed on. I want the nose eyes and mouth to change without changing the neck (it is important not to change the neck size/shape/etc because I am using it for a game and it has to remain the same in order to fit the avatars bodies correctly in this game. It is also important to keep the same type of UV map for easy texturing.

Here is what the head looks like: [url removed, login to view]

Here are the features I want it to resemble: rosie huntington-whiteley

http://www2.pictures.stylebistro.com/gi/Glamour+Women+Year+Awards+[url removed, login to view]

and more photos of her:

[url removed, login to view]

3D Animation 3D Modelling 3D Rendering

Project ID: #7352986

About the project