This powerful 2-stroke engine is perfect for radio control SuperTigre model number G-71, this engine is ideal for use in airplanes and requires nitro and glow fuel to operate. The new old stock pattern or formula one style carb in the back makes it a unique addition to any collection. Whether you're a seasoned pilot or just starting out, this engine is sure to impress. new old stock.the carb is newer than the engine the barle stop is in the front instead of on top