The blistering, dangerous speed of the turbo Ford Sierra RS500 takes absolute control of the mountain. Local teams finally unlock the volatile engineering secrets of the European imports. Dick Johnson captures a spectacular pole position, but the endurance race transforms into a high-stakes mechanical chess match. Evading the chronic engine and turbo failures that wipe out the front-runners, Tony Longhurst and Tomas Mezera deliver a flawless tactical run to claim a historic victory.