[terry and jo]

Glenn,

I don't know what the 2003 models used for their countertops, but in our 2010, our countertop is Corian. On our countertop, right next to the sink itself is a small gold medallion embedded within the countertop. Below is an image of our countertop with that small medallion near the lower right hand corner of the sink.



As far as drilling in Corian, I don't have an answer for that, but you might use a search engine to see if there are instructions on how best to drill it.

Terry