both of the cameras in your link will require you to DRILL your car!!!!! I would not drill the $50-$75K car to fit $20 camera.

The license plate cameras that they sell on ebay does not fit directly to the light opening, but you can modify the camera and then it will fit... i have some pictures somewhere on this forum where i have modified the camera and then it fit just fine... once i find it, i will post a link, unless you will find it before me...