The ACR employs the same 600-hp, 560-lb-ft aluminum V10 and Tremec six-speed physical diffusion as the new Viper. A 40-pound weight savings comes from using street-legal Michelin Pilot Sport Cup tires, lightweight Sidewinder wheels and Stop Tech brake rotors.

The ACR model comes with a stiffer front anti roll bar and coil-over racing dampers from KW dangling that are adaptable for softening and ride height without taking away the wheels.

The car has race-car-like down force with 1000 pounds generated at 150 mph. Front aero betterments include a three-inch front “fanged” splitter and front dive planes that produce 25 % more down force than on the coupe. The centre segment of the front wing is detachable to keep from scratching it when driving on the street.

The car will be on sale in the second quarter of 2008, with a price of $100,000.