The Detroit Speed A-Body Coilover Conversion Kit allows the latest in coilover spring/shock technology to be bolted on to any A-Body, bringing your classic's handling and ride into the 21st century with our 'Detroit Tuned' valving. The base coilover package offers extensive ride height adjustability and is optimized around a 2" drop from stock height.Spring Rate: 575lbs/inSpring Free Length: 9.5in