FSX/FS2004 Mong Racer2 In the mid 1960s, a biplane class was added to the Reno Air Races. The Mong Sport met the basic qualifications, and has been extensively modified over the years by builders to be used as a biplane racer. The Mongster won the 1968 Biplane class of the Reno National Championship. Long Gone Mong won in 1987 and 1989.GMAX model by A.F.Scrub