1969 Triumph GT-6+ Spec Sheet. It is not only the sloping rear that makes the GT-6+ a true fastback sports car. With a high-torque, 6-cylinder, 2 litre engine, the car's power-to-weight ratio coupled with its sporty handling and superior braking make its performance exhilarating for the most demanding driver. GT-6 prototypes (immediate ancestors of the GT-6+) finished first and second in class after 24 grueling hours at LeMans, for instance. Lists the items that come with the new "Plus".