Simple question I think: Do those Black Jack mirror covers that the dealers sell easily snap over the existing mirror? Do I need to remove the old cover or do these just fit over the old? Is the same true for the interior mirror? I remember reading a post a few years back describing how to very carefully pry the mirror cover off, but maybe that was to remove one of these upgrades after it's been put on? And if it makes any difference my car is a 2010 Justa.

 

For the side mirrors, you take the existing mirror cover off before you put the new ones on. They come off really easily.

Not sure about the interior mirror.