Side pipes and roll bar added as well.
I don't put any protective polish on mine and I drive similar sort of miles to you. I give it an all-over polish once a year with Mothers and then just use a vinegar based window cleaner to get bugs and finger prints off.
If you try to maintain a faultless mirror finish all over, and use it, it will drive you insane. They look all the better with a little road patina in my view.
Paul