K&N has become a vital part of the NHRA's Pro Stock drag racing class. Whether it's hood scoop desig...

K&N has become a vital part of the NHRA's Pro Stock drag racing class. Whether it's hood scoop design or the K&N Horsepower Challenge K&N has made its mark on Pro Stock. Check out what Pro Stock drivers Warren Johnson, Jason Line, Greg Anderson, and Mike Edwards had to say about K&N at the 2009 SummitRacing.com Nationals in Las Vegas, Nevada.