This Under-hood Cold Air Intake Package for 1992-1996 LT1/LT4 Corvettes and 1990-1995 ZR1's will provide up to 20 additional horsepower depending upon your application. The kit is constructed from stainless steel tubing and is black powder-coated for a superior appearance. It includes three Blackwing® reusable, high-flow, cone-type air filters, and includes all the necessary hardware and instructions for an easy, bolt-on installation. Note: Not approved for sale or use in the state of California or other states that require a CARB E.O. # (Executive Order Number).