I flew one of these when i was a kid for about 15 years it had a OS 61 fx heli motor with tune pipe on it. It was a blast but my old man sold it 5 years ago since i wasnt flying it any more. Also ive check with aztec he's out of country is there any one else with kits. i really want another one to biuld as a electric i want to push it past 200 mph.