Greg,
Might want to mention Estes, the parent company of Cox has some of their own versions. Their's are RTF's. Didn't stop me from converting one over. I used the P47, it comes in a silver skeem normally, I wanted an olive drab version. Hitec 50 servos, working ailerons and elevator, vs the original actuator activated rudder only. I kept the stock motor but added a GWS esc and Spektrum rx. Powered with a TP 2S730 lipo. I also removed the positive dihedral from the wing. Maiden was today. If yours flies like mine you will be a happy camper. I'm going to add the Corsair and P40 next. And if you need a dog fight mate, Estes makes an Texan that could easily transformed into a Zero.