My club (10 of us) decided to have a winter build night...to build identical pylon racers for a spec pylon series in the summer. We settled on the Great Planes Mustang P51-D .40 size kit with a .46 size engine limitation. I havent seen this plane fly...but I've seen a T-34 Mentor with a .46 Evolution that screams. I would be willing to bet that the Mustang flies well with this combo.