Vipers have had ABS since 2003 (I'm adapting the '03 ABS to my build), but traction control is new and can be turned off for the hard-cores. Also available is adjustable suspension. Some real cool things are happening with this car. Viper guys seem to be split, though I think more tend to like it than not. Time will tell if it sells, but I think price-point will be an player in this one I think.
I also like that the body is 44% carbon... More rigid frame (I'm updating a couple things on mine that I noticed in the Viper), and a 355 tire... That's just cool. Though an extra 1/2" really won't make that big a deal, but it's still cool, and I MUST have the wheels off the GTS.
