yep, it sure does function. That is, if you like parachutes.
It actually is not that big, and won't kill your performance, but it does nothing for performance. As stated, it might help at high speeds, but the Aero or SN95 is not designed for high speeds.
IMO, it is ugly, except for ADRENLN's 2v beast. That is one of the few cars that I have seen it look good on. Send him a PM for info. I'm sure he has some pics.