Yes, the Sundowner seat is still available and will fit your 2007. It will actually fit from 1997-2007. PM me or post here if you want a few pictures on/off the bike.
If you don't mind could I see a couple pictures with out the passenger seat on the bike and one of the underside of the solo seat. Just asking a question also will I have to take off the backrest assembly on my bike off?
Thanks, Brian