Hey Kufman- Its good to see another brushless man from Illinois.
I have ran the Novak system in a Matt Francis truck quite a bit and it works great. Im sure it would work just as well in the xxx4. I have been wanting to try a brushless in a xxx4 for a long time but there is no class for them at my local track.
I have ran the brushless sytem in many other cars and it works well in most. The only problem i have ran into is the lack of magnet drag to slow you down coming into corners. If you are racing a car that is set up well enough to handle the increased corner speed then it is real fast. But that is hard to acheive.