This is the 46 size ARF they just put out. It comes with mechanical retracts. I will fly it for the first time this week.....can't wait! Also, this ARF has ultracoat for the covering, and not a bad job being covered by the factory. Anyone fly it with the Saito 72? Would like to hear some first hand experience, they recommend running a magnum 56 4stroke I think???? So I thought the 72 would be a good bump up, This is my first 4 stroker so I'm a novice on how much power this will give.....any more feedback would be great!!!!!