If you think there's a benefit from a gyro effect - there's no stopping anyone running a brass flywheel at the front of a 2WD. Have it turned by the steering servo to throw the car into the corner more? I duno - I raced a K1 myself in 2WD - the geometry isn't as desperate for steering is all -and neither is the layout, so it's easier to drive on these stupid high grip tracks.
Dirt tracks only for a season see how it goes. It rains - big deal. Man up and run a nicely sealed up car. Couple of tyre choices, holeshots or something more meaty for a loamy dirt track like step pins or similar.
I think I just went off on a tangent.
