I was there for the press days. Was right by the race version when it fired up. :-)
The lightest version is the Track Package version. It weighs in at 3297 lbs. The GTS is the more luxurious version. Later there will be an SRT version. So would that make it the Srt Viper SRT, like the Ferrari Enzo Ferrari?
Prices have not been announced so anything you here is rumor, including this. I talked to several well connected people and heard you would get change for your $100,000 bill for this car. But probably not much. The next version would be 20-25K more, but I'm sure there will be options to raise that price.