ECX Torment's stock rcvr not fit for transponders
FYI for anyone else who has a stock ECX Torment with the Spektrum SR200 rcvr -- you can not hook up a transponder to this rcvr...I bought the transponder and found out after the fact that I needed to have an empty plug on the rcvr to plug the transponder into for power. (SR200 only has 2, one for throttle/one for steering).
AMains Hobbies has the Spektrum SR300 rcvr for $34.99 + free shipping.
Others who know more about R/C sport probably already know this, but this FYI is for other beginners like me, so you'll know you have to get a new rcvr to hook up the transponder, or an alternate way of getting power to the transponder.