General Mayhem: 707HP Hellcat Engine in a 1968 Charger! Roadkill Ep. 43 See the very first running, driving vintage muscle car powered by a 707-horsepower, supercharged, 6.2L Hemi engine from a 2015 Dodge SRT Charger Hellcat! The car is the General Mayhem, Roadkill’s 196...