If you get a 12s you can run 12 cells on it. It won't have the same power as a 8L will. I think you may be underestimating the power of a brushless motor. My brother ran a 8L in a emaxx which is like twice the weight or more of a rusty. It was breaking up stuff in the emaxx.
Peace!
Country
Help support the
Rc-Monster Buy here