its not exactly about having better numbers in a supercar..,. although it cirtainly helps. Steve Saleen wanted a no compromise road car, and people jumped at the opertunity to want a race car before the road car...
the road car had almost an additional year of develpment to go into the road car.
the saleen has hannels through its body to create downforce. each gill is funtional
the enzo was designed by Pininfarina... its beautiful, and produces 1600* lbs of downforce at max, and adjusts to much less to somewhere around 1100* lbs for top speed.
saleen was less concerned about looking like an F1 car.
and let me talk to that aerdynamisist, or thurmodynamisist, as i would tend to think i know something about it as its only directly related to my major... i can assure you, it is quite possible to get those downforce numbers, just not likely with just the outter body shell