[RC-Monster Mike]

The posted information about the motors (max amps, etc.) really is not indicitive of the actual numbers when driving the car. The 480 fun motor will out accelerate a larger motor in a small truck because it has a smaller rotor and can spool up faster. the 1920 can certainly supply more power for longer, though. How many cells are you planning on running in your b4? Mounting the controller will take a little creativity, but should't be too difficult. If you are running 8 or more cells, the 9918 will handle the job with ease. For less cells, the same controller will do, but would need a receiver pack for the best performance. The MGM 80 amp controller could handle the job as well, and is easier to mount (smaller size).