This a great example of our great british fun flys, none of your fast USA symetrical sections, these are for slow flying and slow stunts, this is why they use the lighter engines, you can use the 46 fine, but use a low pitch prop for throttling, this thing wasnt built for speed, all the limbos ive seen needed nose weight, so the 46 should balance it fine, should also be good for prop hanging and touque related stunts.