Is the air filter box of the raptor 350 the same as the one on the warrior??.... the only diference on the carburator are these letters: BSR, I have no clue what that means because when you try and buy an air filter from yamaha.com it says you need an air filter adapter. When you try adn buy it from k&n it doesnt say anything about an adaptor so i have no clue what to buy. anyone plz help me.