The term 'souping-up' comes from old horse racing cheats who would feed thoroughbreds a mixture of performance enhancing drugs. There's no cheating going on here, but there's definitely a ton of performance enhancement at play, and the car sure as hell looks addictive.
Ford's just announced the Shelby Mustang GT350 R. Basically, give a GT350 some good old fashioned modifications aimed squarely at track use, and you'll start to get the idea, but it's way more than that.
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Let's start with the menacing nose, or rather, what's behind the modified air splitter. It's the same wicked-sounding 500 hp V8 found in the GT350, but now it's got things like a separate oil cooler to help prevent heat soak when the car's blitzing around a race track for 24 hours at a time—something Ford actually did as its been testing this car.
Side note—being a Ford tester's gotta have its perks.
Towards the back, you'll notice the car's now sporting a much larger and much more carbon fiber-y wing, to help maintain some semblance of stability as the car roars through the corners.
In keeping with the best of Ford and Shelby traditions, the GT350 R eschews rear seats in favor of something far more practical to the track-addicted owner: weight reduction. The car is overall around 150 lbs lighter than its more street-friendly GT350 sister.
That's not to say it doesn't know what a nice interior is. The white stripes on the seats are more than just a pleasant contrast, they're a visual cue to the stripe on the steering wheel, used for knowing when you've got the front wheels pointed straight—useful when things get hairy on a race track.
Just in case you had any lingering doubts about how hardcore this car is, take a look at the pure carbon fiber wheels. Up until now, if you wanted a car with this feature you had to increase your budget by a full comma and spring for a Koenigsegg One:1.
Anyone lucky enough to get their hands on a GT350 R had better be too busy bombing corners on a track to notice the sublime "R" embroidered on the seats. In the traditional Shelby American font, of course.
Ford's PR people are calling this the most track-ready Mustang ever produced. From here, that looks like an understatement.