I personally would not bother, i have tried several different methods to try and improve the sound quality of the GoPro on the DW86, the wind noise is just to great at high speeds, the latest video on our facebook was done with a normal case with an open back. [video]https://youtu.be/N8wn-XdcyIY[/video] If it is interior shots then I would recommend getting one of the fixed frame mount, {} this video was filmed using that [video]https://youtu.be/zFjoyTpKIEE[/video]
I've got a Sony one on mine, wasn't stupid price and the sound quality is fairly decent. As above though, on the outside of the car the wind noise sucks once you get to a decent speed. Ideal for in car videos though