Don't mean to disagree with Dauntae but I put a Saito 72 on mine and it flew great. Of course it came out light (7 lbs even) and I don't wring it out. But it did take off at 1/2 to 3/4 throttle. When reading a thread while building I was worried about the weight so I applied liberal sand paper and also got it balanced without weight. Of course I wouldn't want any less power and don't know about the 65. If it's older and not as much power as a newer engine it could fly it but might be borderline.