the real limits of the viper seems to be:
1. driver skill
2. traction
3. traction


while aerodynamics play a factor in any sort of auto racing, it doesnt make much difference until higher speeds...you could build a 2000hp tank, and it would pull off the line from a 1000hp supra...they could be built to weigh the same, but at higher speeds, the aeros of the supra would make a difference...

i can consistantly pull low 1.7 and high 1.6 60 foot times thanks to my suspension and gears...hell, the early vipers in stock form were no strangers to the 13 second range...but with huge trap speeds. this is why you may see things like a new GTO running 13.00 @ 110mph, and me running 12.60@107mph...or a new viper running times like 12.50@120mph...