For good performance, don't even think about a 90 sized engine (gas or glo) in a 90 sized plane for pattern or 3d. You will need at least a ys 110/saito 125/os 120ax. Some have even put the st g2300/ys 140/saito 180/os 160 in a plane this size...

I know it does not do you any good, but the plane you want is my Excelleron. its a pattern ship with 3d control surfaces. But, like others have already stated, there are better planes that can fly pattern, there are better planes that can 3d; but this plane is (imo) the best at doing both (at least in this size). But its discontinued as well...[]