6 of one half a dozen of the next. it really would depend on your minimum speed. Even in 2nd you're going to have to go around corners but if you can keep the speed up so your rpm's don't drop too far then the 4.10's route is a decent idea. UDP's... I never liked them. Not nearly enough benefit to justify the cost. See if you can find a hotter cam for your car, that'll pick the power way up in the higher rpms. Or you could do a MM coil over conversion all the way around and lose probably 70lbs off the car which will help acceleration more than more power.
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