The Dodge Challenger is a popular muscle car that offers a variety of performance and luxury options. The most popular variants are the standard SRT Hellcat, the limited-edition SRT Demon and the SRT Redeye. The SRT Hellcat is the most powerful variant, with a 6.2L V8 engine that produces up to 707 horsepower. The SRT Demon is a limited edition version of the SRT Hellcat and features a 6.2L V8 engine that produces up to 840 horsepower. The SRT Redeye is a more luxurious version of the SRT Hellcat and features a 6.4L V8 engine that produces up to 797 horsepower. The Dodge Challenger also offers a range of other performance and luxury options that make it one of the most stylish and powerful cars on the market.