Yup, roberts correct. That's no to say that as a dealer installed option it could have been a wide range of styles, but really should look like what Robert posted.
You could use metra electronics part number 44-us13 (aw-us13) napa shows them under their balkamp bk 7305904, but they can be found on amazon as well. The only difference I have seen is that the base cone is black plastic vs the original chrome metal.
Chris