What would you guys say is the best set up for roll racing (tires/wheels/gear ratio)?? I currently have 600+rwhp with CS1 20' wheels and Nittos (315 NT05r on rear) with 3:31 gear. These tires/wheels seem heavy and cause me to lose gear. Should I use factory 18' wheels for roll racing and would I benefit from 3:73? Mainly will run from 30-35mph to 120-130mph.