QA1 designed their TS801 Stocker Star Rear Single Adjustable Shock for the GM 1964-77 A-Body, 65-70 & 77-96 B-Body, 78-88 G-Body, 68-79 X-Body, 70-72 Monte Carlo, as well as the 69-72 Grand Prix. 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 TS801 Stocker Star Rear Single Adjustable Shock Features: Fits GM 1964-77 A-Body, 65-70 & 77-96 B-Body, 78-88 G-Body, 68-79 X-Body, 70-72 Monte Carlo, as well as the 69-72 Grand Prix 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: Single Adjustable design, 18 settings, knob changes compression & rebound together Form meets function - these billet aluminum shocks look and perform great!