Having an older '71 Mach with louvers, I think they really give it the retro look, yes you have to mount them up on the glass to fit properly, but no one has complained about any noise at all from them. Been to the track and no noise over 100MPH...Personal Taste...
They do make another by ASTRA (ABS Plastic) that fits tighter to the glass.
VISUS:
ASTRA - As you can see, it fits closer to the glass, and doesn't ahve the trunk lid problem. Will fit '94-UP!
