Designed to add down force to the rear of the car for traction and stability at high speeds. Utilizes 87-93 GT Hatchback 3rd brake light. LX models require 3rd brake light which is sold separately. The Hatchback Wing bolts to factory locations on 87-93 GT. On all other models, holes must be filled and new holes drilled. Includes T-stems which simplify locating the holes to be drilled. The wing comes complete with hardware and gaskets that seal the holes. Fits 79-93 LX or GT Hatchback.