INSTALLATION Go to Star Wars - Galaxy At War/resource/entity/inventory/-equipment/head/helmets of clones - p2 Once you go to helmets of clones - p2 look for 'clone_helmet_rex_p2' and replace it with the new one. Ok I know it is average I am not the best with texturing, I tried my best to make it look like the one from the show. This is the best I got, If you want you can retexture it and release on any website and show it on any video as long as you credit me.
Image to Rex's helmet from the show - Google.com This is based off that.