Track day standard Boxster vs GT4 and GT3

Nice video. I also like to mount my GoPro camera in the same location, but the wind noise is overwhelming at anything over 40 MPH. A dead kitten muffles some of the harsh whipping sounds, but doesn't eliminate the whoosh. I might try an external mic, but that's another $100-$200 in adapters and mics and cords, not to mention I don't like the idea of draping wires all over the car (for safety or aesthetics or swirl marks). Has anyone come up with a better solution?