If you're talking agility maybe, but the reason I said that: is the engine in the Viper is the "all-aluminum 8.4L V10 engine that delivers 645 horsepower and 600 lb-ft of torque..."
The Hellcat is a "supercharged 6.2 Hemi has 707 horsepower and 650 lb-ft of torque."
The Viper weighs like 1,000 lbs less though (3,415) and the Challenger (4,448), I just read, but the Demon will be much lighter than the current Challenger and have a couple hundred more hp, so... Smoked Viper? If they can keep it in the lines?