1/8th buggy conversion

One of my buddies just bought a new Kanai buggy roller and was thinking about putting an OS .21 VZ-B in it. But I am trying to talk him into doing an electric conversion instead of running nitro.

What BL motor and ESC combo would be the best to use for this application? How many cells should he run? He races at a local dirt oval track and is looking for a combo that would be more powerful then the OS VZ-B?


What do you suggest?