[gixxer]

I have the novak and a feiago 8l. The novak is nice and smooth but to me it is lacking performance, so after a few runs the feiago went back in. I still have the stock diffs and they seems to be holding up fine so far. I do think you should upgrade to cvds though if you haven't already. As for run time I dont think you should have a problem in a 5 minute race. I can't give you an exact time since I am running lipo's but really dont think it should be an issue for you.