The Viper has massive fat tires, as well as a racing rear diff. which incorporates dry sump designs and other crap I can't remember, so as far as traction is concerned I'd go with the Viper. The Corvette is lighter, due to being made of flimsy plastic. I'm sorry, but if I'm dumping that much money into a car, I want something that has a little bit of actual metal in it. They can both be good drift cars, but both take an extraordinary amount of talent to do so and not be killed in the process. As far as drag racing is concerned, it depends whether you want them modified or not. Stock, the Vette would probably get it, but tuned the Viper has more potential. I've seen a twin turbo Viper pump out 1,900 horsepower.