I'm really curious about their claim of "Tested to provide the car with better driving stability at higher speeds".
Compared to what? How does it do that? Where's the data? Splitting hairs I realize, and maybe it's marketing hype, but if for some reason their other model created instability at track day speeds (>100mph), I'd just as soon replace it.
Good seller, though. Their site says it's sold out.
http://www.beatsonicusa.com/fda9.html