2014 was a great year for the Mustang. The sixth-generation model debuted with an independent rear suspension, a first for the nameplate, an EcoBoost four-pot, and the most powerful GT in history. All these feats, as well as its global availability, earned it the the 2014 TopSpeed New Car of the Year award. Last year also brought the Shelby GT350, a track-suited muscle car powered by the first-ever Ford production engine to use a flat-plane crank and, at more than 500 horsepower, the most powerful naturally aspirated mill the company has ever created. Thankfully, Ford didn’t stop there. The lighter and meaner GT350R broke cover at the 2015 Detroit Auto Show, giving us a strong contender for this year’s Performance Car of the Year award. What’s more, the 2015 Mustang is set to receive a host of aftermarket upgrades, one of which is the spectacular HPE700 package by Hennessey Performance.