frankly, i think the overal setup is important, secondly - and more important is the driver!!
space frame, drag slicks etc do help, but we need a driver that can drive the machine to the maximum!!!!
the pink 200sx from thailand came with a mission to clock 8 sec but too bad he broke the gearbox. he sounds very confident that his car can clock 8 sec because the last round when he did 9.099sec, the car is still NOT running on maximum power.
BUT, if any other driver is to drive the car, we may not even get the 9 sec. do u guys notice that the HKS drag r33 is always driven by the same driver (i think kawasaki something)?? i can bet you that if another driver is to drive the car, it may not clock the usual 7 & 6 sec..... controlling a 800bhp++ machine is not easy.... i've sat in 1 800bhp machine before and i can see that its not easy to handle at all, what more if the driver must launch perfectly, gearing at the perfect timing etc etc throughout the 400m???
i've seen a car driven by 2 driver in a same drag race clocking time difference of nearly 1 sec, so driver really does matter!!!