It's not that hard to come up with a supplier. I came up with one example in less than 2 minutes, and I'm on a dial up connection:
http://alkaplus.com/cgi-bin/catalog.cfm?action=detail&ProductID=217
I don't know if this is any good or not, I am not promoting this business in other words. It's the first one I cam up with.
I jsut entered "dash trim mercedes ml aluminum" in my browser and got lots of hits.
Gilly