QA1 designed their TD801 Stocker Star Rear Double Adjustable Shock for the GM 1968-74 X-Body as well as the 1975-79 X-Body. Manufactured from lightweight billet aluminum, these shocks provide exactly the ride you want, high performance handling and great looks! Made in the USA, these QA1 shocks are 100% dyno tested and serialized before leaving our Minnesota factory. The lightweight billet aluminum smooth body shocks offer easy, bolt-in installation. They are serviceable and rebuildable by QA1 authorized service centers. QA1 TD801 Stocker Star Rear Double Adjustable Shock Features: Fits GM 1968-74 X-Body as well as the 1975-79 X-Body Lightweight Billet Aluminum Twin-Tube Internal Design Compressed Length: 13.75 Extended Length: 21.25 Ride Height: 17.50 Bushing Eyelet ID: 3/4 Lower Bushing ID: 5/8 Polyurethane Bushings Each Sold Separately Note: Double Adjustable design, with 18 independent selections for compression & rebound Form meets function - these billet aluminum shocks look and perform great!