Has anybody used a aftermarket rearview mirror that has a back up camera lcd option on it? Basically the type that looks like a regular mirror but as soon as you activate your reverse and LCD screen pops up behind it, Was curious about the mounting scheme for a W126. Trying to figure out if I can just attach the mirror with the ball attachment and put a different rearview mirror on it, so I can keep the same factory mounting scheme that attaches to the ceiling