I have looked into this and don't believe any grille will just fit. I also wouldn't want one with the big star. I thiink if you can find a nice MB grille without the star that is a little bigger than our grille it could be modified t work. Here is one I have seen before that might be able to be modified to work:

Mercedes Brabss Radiator Grille W163 ML320 ML430 ML55:eBay Motors (item 280405244051 end time Oct-10-09 17:19:16 PDT)

Here is another that would look good if you can remove the bars from the bhrome surround

http://cgi.ebay.com/ebaymotors/2003-...Q5fAccessories