According to other users, Meguiar's Plastix works well....might want to try that first. Otherwise, yeah, it's replaceable. You just have to remove the gauge cluster.
The headlight switch is easy, IF you've done it before. I used a small flathead on the tab INSIDE the knob, pull it towards the back while pulling the knob in the same direction.
whoever had this car before went a little overboard w/ chrome on the interior so the knob isn't stock...it's bling'd lol. Hopefully the aftermarket one will be easier to remove.