The Stolp Starduster Too SA300 is a two seat, conventional landing gear equipped homebuilt biplane. Aircraft Spruce & Specialty Co currently holds rights to sell plans for the aircraft. The 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.The 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 & Whitney R-985 engines.