Ken, thanks! And thanks for the confirmation about the mirror differences. I was pretty confident in that claim, but didn't bother to research.
Edit: I believe it is 96-00 and 01-02. Dan's 2000 has the same mirrors as mine.
Mike, thanks. I am not positive my rear defroster works. The light does not come on. I'll have to play with it later.
I don't think I would have had much luck with that impact driver on the mirror. You would have to support it between the mirror housing and the door bracket, upside down on the flat of the hinge. Replacing the screws was easier.