Cheetah Evolution, established by Craig and Bob Ruth of Ruth Engineering & Racing, specializes in producing modernized replicas of the 1960s Bill Thomas Cheetah race car. The company offers various build options, including a "roller" package that features a mounted body on a chassis with suspension, steering, differential, and radiator, as well as a "body only" package for do-it-yourself enthusiasts. These vehicles incorporate a round-tube…