the only problem with these 2.4 systems are the receivers
they rx leads plug in the side and not the top like the real 2.4 units and make wiring a nightmare !
FrSky do a 4 chanell RX thats smaller the the Futaba unit
see:
http://www.hobbyking.com/hobbyking/s...ompatible.html
Which FrSky TX Module will work with this RX ?