Have a look at these:
http://www2.towerhobbies.com/cgi-bin...?&I=LXD094&P=0
I've used them on my pro ten and was happy with them, especially considered the price!
Otherwise have a look at these:
http://www.teamcrc.com/crc/modules.p...&prodID=601681
I've heard good things about those too. I haven't tried them myself though.