Designed to add down force to the rear of the car for traction and stability at high speeds. Utilizes GT hatchback 3rd brake light. The hatchback spoiler bolts to factory locations on the GT. On all other models, holes must be filled and new holes drilled. Includes T-stems which simplify locating the holes to be drilled. Comes complete with hardware and gaskets that seal the holes. Will require prepping, priming and painting prior to installation.