I bought the Blawkhawk, nitro version ; then converted it to electric. Went to dymond and bought all required parts. I am using the stock motor with castle 45 and a 3300 mah 3 cell lipo,3- hs 65 servos....not sure which servo to use on the tail. When I put it next to the T-rex there is a big difference.I will use my JR 8103 with pcm 770 receiver and a 401 gyro. I will probably use the futaba 9650 or the new aitronics mini digital.....whichever one I get my hands on first . I am intermediate flyer so I am not concerned about the heli's 3-D capabilities, although "they" say it does OKAY.