Lee, If I remember correctly we used the ones they had on the 04 Sun Voyager they are heated and electric adjust. They were bought new.
I had the holes filed and painted looks like they were never there!
They are so much better than the overhead ones, I had the same problem as you too many blind spots. I can't figure why they ever put them things on their coaches they only did it for one year I think but like you I got one.
Also check out the GS owners forum that's in my signature it has no ties to GS just a bunch of owners getting together to solve problems and swap ideas.