680cr is a removable reflective, so it isn't a terrible process.. if it has been on primer, it can be a slight burden to remove. Easiest is to just soak it with adhesive remover and use a soft plastic edge to scrape, making sure to keep it wet to avoid scratching of any kind. The rest, with a little bit of heat, comes off very nicely.
addition: Installation is pretty similar... but keep in mind that it is exceptionally thicker, so mind any bevels. On flat surfaces, it's a cakewalk.