THIS IS AN O.S.MAX .65LA ABN ENGINE WITH MUFFLER FOR SPORT AIRPLANES. INCLUDES: ASSEMBLED ENGINE W/#60J CARB, MUFFLER W/SCREWS AND #A3 GLOW PLUG REQUIRES: GLOW FUEL WITH 5%-15% NITROMETHANE AND 18% (MINIMUM) OIL CONTENT, MEDIUM FUEL TUBING, PROPELLER AND STARTING EQUIPMENT (IN AIRPLANE ACG)