I hooked up the 4800kv Medusa onto the Rustler with the heavy beadlocks and Imex tires. With the use of a cold 3s1p A123, 200A ESC, 58/25 gearing, it pulled my voltage down to 4.39V@153A, peak 786W. I'll drive it around through grass tomorrow and see how the motor and esc behave.