What multi-day event, officially known as the National Championship Air Races, uses an engine commonly used on Hawker Sea Fury and Grumman F8F Bearcat Unlimited Class Racers?
Wright R-3350 Duplex-Cyclone:  The engine is now commonly used on Hawker Sea Fury and Grumman F8F Bearcat Unlimited Class Racers at the Reno Air Races.
i don't know