kidney grille replacement

My friend just bought a 2012 X5 and he would ideally like to swap his black grilles with chrome ones. Contact me if you are interested in a swap or if you have chrome kidney grilles to sell.

The Chrome Kidney grille border fell off my 2000 e46 3 series. Do I need to purchase a a whole new grille or can I just purchase the chrome border around it? I've been looking for a do it yourself installation web site but can't seem to find any. Does anyone know how easy it is to fix this...