Mazda is already very aware of how popular their cars are in amateur motorsports, including autocross, and provides (in my opinion) the best support of any manufacturer. Mazda Motorsports support includes contingencies at tours & pros (and for other types of amateur racing), reasonably priced racing parts, discounted stock parts, S-plan pricing on new mazdas, publicity (all the way up to TV ads with shots of amateur race cars), trunk kits^H^H^H^H^Hcompetition trim packages... all provided by friendly and helpful people.
That incredible support is one of the reasons I autocross a Mazda. Well, plus the cars themselves are truly awesome :). What more would you have us ask than we already receive?
-- Glenn