RE: Is this plane overpowered with a .40?
KINGX -- The .46 LA produces a reliable 0.8 hp vs an advertised 1.2 HP, similar to the .40 LA producing 0.65 HP vs an advertised 1.0 HP.
JZINCKGRA -- No plane short of a park flyer will be overpowered by a .46 LA -- go for it.