This 1963 Studebaker Gran Turismo Hawk carries a four-barrel 289 V8 and a 3-speed Flight-O-Matic automatic, but Studebaker actually offered the engine in four different states of tune that year, including a supercharged version most fans have never heard of. Built during the company’s final years of U.S. passenger car production, every surviving GT Hawk is a piece of automotive history. Here’s what made this compact grand tourer more interesting than it looks.