QA1 Shock Absorber TD404QA1 offers aluminum shocks for your 84 87 Corvette available in double, single and non adjustable valving options, allowing for your choice of adjustability. With its great look, high performance handling and unbeatable price, you can't go wrong with a QA1 Corvette smooth body shocks. Made in the U. S. A., Easy, Bolt In Installation, No Cutting or Welding Needed, Non Coil Over, Lightweight Aluminum, Stock Mount, 100% Dyno Tested and Serialized,