Singer’s Custom Porsche 911 Safari, The ACS

California-based Singer Vehicle Design’s all-new restoration, The ACS (aka All-Terrain Competition Study), reimagines a 911 Safari Porsche building atop the 1990 964 with retro-future lines and proportions. A carbon fiber body and aluminum protective panels house a twin-turbo, air-cooled, 3.6-liter flat-six equipped with just under 450 horsepower. Also included are a long-range fuel tank and two full-size sets of spare tires and wheels, at the …