I would like to know what he said too, A 60 is A lot of poop to pull that light little plane around. I have had two engines in mine, an OS 70 four stroke and A Thunder Tiger 46. I liked the 70 best but it was over powered even with that. The 46 was better but it just didn't sound right and tended to dead stick too often so I went back to the 70 only installed it inverted this time. Fit better inverted and after tuning it I have never had another dead stick. Still over powered though.