Originally 44-84961 during world War II, this Mustang was sold surplus in 1958 becoming N7751C. It began racing in 1964 , was modified as "Miss RJ" in 1967, modified some more as "Roto-Finish" and finally modified again with a RR Griffon engine driving contra-rotating 3 bladed props as "Red Baron" after 1974. The racer crashed during the Reno Races on September 6, 1979. The remains were bought by Fighter Rebuilders of Chino, CA in 1985 and combining parts from another Mustang (44-73053 and ex Indonesian Air Force), rebuilt the aircraft as a stock P-51D.