It’s a street car, a race car, and a rolling testbed for one of the best suspension companies in Northern, California. This is Xecution, the 1966 Ford Mustang coupe that’s been terrorizing West Coast racetracks for more than a decade. To see how good it really was, though, we brought along Ford’s newest bad boy, a 2017 Shelby GT350R, to use as the benchmark for a new-versus-old showdown.
