I have got a better GBS for ya

as you can see from the inputs it just needs servo outputs and voltage to do all the magic, and i hear theyre very good. i put a fair bit of time getting it translated, i have yet to order one but they are good on a 3s setup as well.
http://www.offerany.com/p-524119292554.html http://www.29bc.com/plus/youku/?id=XMTM3NDgxMTE1Ng==