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 2 takes performance to the next level with coilover shocks and springs that provide ride height adjustment.Spring Rate: 600lbs/inSpring Free Length: 9.5in