Dodge is determined to let the Viper go out with a bang as the company is planning to introduced several limited edition versions of the sports car before production comes to an end in 2010. The third special Viper SRT10 is the ACR-X, a track ready racer boasting a modified V10 with 640 ponies, suspension and aerodynamic improvements as well as all a bevy of safety equipment. Hit the break to watch the video and don't forget to turn up the volume of your speakers to get a taste of the wonderful sounds of Dodge's new limited run 2010 Viper ACR-X.