Galaxy Pack

http://www.androidauthority.com/ - I tour the features of an add-on pack for the Galaxy Nexus used to gain many features of the Galaxy S3. The features include the ICS Touchwiz launcher, wallpapers, and GS3 Apps. The add-on pack comes as a .zip file that you can flash using clockworkmod recovery, and works with most AOKP, and CM9 ROM variants.

you can find it here:
http://forum.xda-developers.com/showthread.php?t=1669190