Our exclusive Detroit Speed A-Body Speed Kits are designed to work as an integrated system on your vehicle. By utilizing our proven Detroit Speed components and carefully selecting components designed to complement each other, each speed kit is for your driving needs with the ease of a bolt-on package. Speed Kit 1 is designed to bring your classic GM muscle car into the 21st century with improvements in ride, handling, and camber/caster correction.  This kit is designed to drop the vehicle two inches from original factory height.