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"Ford hosted a 2015 Mustang Q&amp;amp;amp;A session at its Michigan development facility yesterday, where it announced official curb weights and horsepower ratings. The company also opened up with some in-depth tech specs. After the forum ended, Dearborn reps took to the test track for a few quick demo laps.      RELATED: Here are the official 2015 Ford Mustang power and weight numbers Both underhood and exhaust sounds from this automatic &amp;#039;15 EcoBoost Performance Pack car are a big improvement from the identically-spec&amp;#039;d 2.3-liter we rode in a few months back. Ford also tells us that with Performance Pack trimmings, this four-cylinder is roughly as quick on-circuit as the outgoing GT.       RELATED: 135 hp/liter and other interesting 2015 Ford Mustang numbers An engineer also told us that the shift linkage for the six-speed manual transmission in the GT has been redesigned to reduce flex. It&amp;#039;s now entirely aluminum, save a single steel rod.      Exterior exhaust notes\u2014the 5.0 GT, followed by a silver V6 (note: now with dual pipes) and the yellow 2.3-liter. RELATED: Four reasons Ford should race the Mustang at Le Mans "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.roadandtrack.com/car-culture/videos/a8354/in-car-footage-of-the-2015-mustang-on-ford-test-track/>