Thought I would post a pic or two of my solution for stealth in the WRX...

I got an old tapedeck from an '00 Impreza and ripped off the faceplate, then glued the knobs back on. It fits perfectly in the sled opening.








To the would-be thief, I think that looking in from the outside at an angle through my dark tinted windows, the tape deck is pretty convincing.