Edelbrock Performer Buick 455 Intake Manifold Features: For Idle to 5500 RPM Street-Driven Performance Dual-Plane Low-Rise Intake w/180 deg. Firing Order Patented Runner Design Ensures Broad Torque Curve Excellent Throttle Response and Mid-Range Power 50-State Street Legal if Correct Carburetor Used Will Fit Cold Air Induction Hoods Height: 7.00 Width: 14.50 Length: 24.00 Weight: 21.50 lbs Vehicle Type: 2693 Fitment: 1971/Buick/Riviera/Gran Sport/7.5L 455Cu. In. V8 GAS Naturally Aspirated::N/ARec.Edelbrock Gskt PN[7246] And FelPro Gskt PN[MS96005] for Manifold Gasket~ Engine Swaps~ For Engines Transplanted Into An Uncontrolled Or Pre-Pollution Vehicle~ Not Legal For Use On Pollution Controlled Vehicles^^1971/Buick/Riviera/Base/7.5L 7456CC 455Cu. In. V8 GAS OHV Naturally Aspirated::N/ARec.Edelbrock Gskt PN[7246] And FelPro Gskt PN[MS96005] for Ma...