Aircraft Spruce \u0026amp; Specialty Co currently holds rights to sell plans for the aircraft. \u00a0 \nThe Starduster Too was developed to be an economical two-seat sport biplane. The airplane is designed to plus 6 or minus 6 G loading. It was not intended for use in aerobatic competition, but it can perform basic aerobatics. \u00a0 \nThe fuselage is made of 4130 steel tubing with fabric covering. The spars are made of spruce wood with plywood wooden wing ribs. The base engine is a Lycoming O-360 180 hp (134 kW) engine, but alternative examples have been built using the Lycoming IO-540, Ranger, Ford V-8 and V-6, Continental, Jacobs, and even Pratt \u0026amp; Whitney R-985 engines. \u00a0 \nThe Starduster Too is a popular biplane homebuilt design. There are several with over 2500 hours of flight time, and one with over 5000 hours.