When it comes to American muscle cars, the most authentically retro is indisputably the Dodge Challenger. And now even more heritage is baked in with new 2015 R/T Scat Pack. In 1968 Dodge created the Scat Pack Club – a fraternity of performance enthusiasts which quickly grew into a partnership between Dodge and Mopar to deliver stage kits to maximize their cars’ potential. Flash ahead to 2014 and the Scat …