Custom SEMA build known as “Demonic,” completed in 2017 by Dave Fansin of Missouri. The 2018 Challenger Demon prototype supercharged 6.4L V-8 uses an IHI-developed 2.7L supercharger, a Killer Chiller intercooler system, and Doug’s long-tube headers. It has a trunk-mounted fuel cell, twin Optima YellowTop batteries, and AutoMeter gauges.