Novak HV? if so it is only good for 4s lipo. The 6.5 motor will be the best, but a feigao xl will be better, I responded more info in your other thread.
I've owned both and the novak motors are far superior in efficiency and quality to the feigao motors. Hopefully the novak motors will run well on the MMM, but I dont think anyone has tested that yet.
Check out my custom converted 8ight:
Sub 7lb, lowest CG of any 1/8 buggy