Fits 1964-1972 GM A-Bodies;Manufactured from chrome silicon high-tensile spring wire;521 lb./in spring rate;Cold-wound on a CNC coiling machine to exact specifications;Stress-relieved at 750 degrees Fahrenheit;Shot-peened;Computer-tested for accurate height and spring rate;Lowers the front of your vehicle by 2 inches;Improves handling and ride quality;Lifetime warranty against spring sag;Available in red powder coat for long lasting good looks;2-3 hour installation time;Proudly designed in the USA!;Proudly made in the USA!