try this

http://www.carshine.com.au
they sell lots of body kits but i don't know about amg kit

there are some in USA for real and fake amg kits, let me know if you want their email address. a real kit runs about$2500 and a fake one about $650-750 plus shipping

there is a place in singapore i believe that sells fake amg kits real cheap and it might be good for you since you are close to it. i will try to find the web address for you if you want it. i think the fake kits in USA are from them.

good luck