Rich Kent’s 429-cubic-inch, E85-fueled 1962 Mercury Comet takes on a 707-horsepower 2015 Dodge Challenger Hellcat at RT66’s Test N Tune — and the results aren’t what the horsepower numbers alone would predict. With the Hellcat spinning off the line and the Comet launching wheels-up, this grudge match has sparked debate for years. Watch it play out and decide for yourself who really won.