Just have to wire the motor up but I didn't have any 4mm bullet connectors to finish the job. This Q-base esc from HPI uses 4mm bullet connectors on the esc for the motor and solder posts for the power wires. I routed the sensor cable under the radio tray and it seems to work well.

I am less than impressed with the quality of the hardware this kit uses. I replaced most of the included hardware with my own stuff. I'm using the stock bladders for now with foam compensators that I made. The stock bladders are useless without them. Also, I was kind of let down when I found that there was a few philips screws included instead of hex hardware for the bearing retaining screws that go into the diff (see pic below)

Philips screw? Really?