The Viper line has two models, the original Viper RT/10 Roadster ($67,225) and the newer Viper GTS Coupe. The RT/10's inspiration was the Shelby 427 Cobra, while the Coupe is clearly modeled after the Shelby Daytona Coupe.Base price for the GTS Coupe is $69,725. The test car included the racetrack ready American Club Racing competition package, a $10,000 option that adds 10 horsepower, stiffens the suspension and deletes features such as air conditioning, stereo and fog lights. The $910 comfort group re-adds the A/C and the stereo. Next Page