I had them installed I ordered these products these products through a group buy autoxclusive had some time ago... You can either bolt them on or glue them with anything you want... I used an Epoxy glue which is a bit harder than the one they sent... They wont either come off... and if you at one point decide to have them removed it is not going to be to easy depending on how you put them on of course...

Only complaint I have is that they are just a little not rightly seized as their is still a tiny bit of the old cover showing...