RKSport has been working with Chevrolet\'s best in-house stylist for many years now and they were the talented minds behind the 2004 Ground Effects Packages. Offering a lower looking GTO following the same lines of the stock body. The race-inspired package was designed to build on the sports car locked inside the GTO. Each package comes with the front spoiler , side skirts, and rear valence. The GTO package come with OEM style mounting hardware and detailed instructions for easy installation. All ground effects components are manufactured from the highest quality urethane obtainable for flexibility, durability and impact resistance.