[Overdriven]

If its rated for 20amps I'd say it can do it. Even in a big truck like that the servos won't draw more than 1 amp each (maybe 2 amp spikes), and each fan will be less than that. You might want to power the servos off the ccbec instead of the reciever though. 1/5th scale guys to this to lower the current going through the Rx, and to make sure the servos get full power. Only the white (usually) signal wire ends up going to the Rx. Glad to see the truck will end up running agin in its brushless glory.