GLENDORA, Calif. (March 20, 2018) The K&N Horsepower Challenge all-star Pro Stock event will feature eight of the best racers in the factory hot-rod category and seven racers have secured their position in the starting field. The eighth and final position will be filled via a fan vote. 

Voting is open now and will end on Sunday, April 1 at noon Eastern. Fans can go to https://www.nhra.com/knfanvote to vote for their favorite driver.  

The K&N Horsepower Challenge will be held Saturday, April 7, during the DENSO Spark Plugs NHRA Four-Wide Nationals at The Strip at Las Vegas Motor Speedway. 

Drivers that have clinched a spot into the K&N Horsepower Challenge include Bo Butner, Greg Anderson, Jason Line, Drew Skillman, Tanner Gray, Jeg Coughlin Jr., and Erica Enders. 

The following Pro Stock drivers are currently eligible for the fan vote: Chris McGaha, Vincent Nobile, Alan Prusiensky, Alex Laughlin, Deric Kramer, Matt Hartford, Kenny Delco, Shane Gray, Val Smeland, Shane Tucker, John Gaydosh Jr., Brian Self, Mark Hogan, Larry Morgan, Steve Graham, David River, Richie Stevens Jr., Tom Huggins, Wally Stroupe, Johnny Gray, and Joey Grose. 

The winner of the fan vote will go up against the other seven entries in a three-round shootout in Las Vegas. The champion of the K&N Horsepower Challenge race will win a $50,000 grand prize. The runner-up will receive $10,000 with $3,000 to the two semifinalists and $2,500 to the four first-round finishers. If a driver doubles-up by winning the specialty event and the national event, that driver will win a $25,000 bonus.

Greg Anderson continued his dominance in the event when he raced to his second consecutive, and his sixth overall victory in the event. Anderson defeated Allen Johnson, Butner and Shane Gray in the finals for the win and a $50,000 payday.