The Top Flite Mustang ARF is a nice plane at $429 and many have powered it with the DA50. You can even buy scale exhaust that is quality work. I have this exhaust made for the G62 and can't wait to hear how it sounds and looks.

http://www2.towerhobbies.com/cgi-bin...&I=LXEDP2&P=ML

http://www.keleo-creations.com/Mustang/DA-50engine.htm