Hi,
Graupner Kwik Fly ARF (can be electric or nitro):
http://www.youtube.com/watch?v=2e2ox0mlngk
Robbe Mäxi (Maexi) ARF (can be electric or nitro):
http://www.youtube.com/watch?v=SL-SDGKyxXY
http://www.youtube.com/watch?v=cu-w_24RFd0
A 56 4-stroke might be on the heavy side but it should be OK.
/Bo