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. Reno Air Races: The Reno Air Races, officially known as the National Championship Air Races, is a multi-day event tailored to the aviation community that takes place each September at the Reno Stead Airport a few miles north of Reno, Nevada.
Reno Air Races