Weiand 8125 Features: All New Optimized Design Low Rise Dual Plane Design Runner Geometry Optimized Universal Dual Pattern Carb Flange Height: 6.88 Width: 11.50 Length: 23.00 Weight: 16.15 lbs Fitment: 1986/Pontiac/Firebird/Trans Am Coupe 2-Door/5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated::LowerLegal Only For Off-Highway Use Or Racing^^1986/Pontiac/Firebird/S/E Coupe 2-Door/5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated::LowerLegal Only For Off-Highway Use Or Racing^^1986/Pontiac/Firebird/Base Coupe 2-Door/5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated::LowerLegal Only For Off-Highway Use Or Racing^^1986/Chevrolet/Corvette/Indianapolis 500 Pace Car Convertible 2-Door/5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated::LowerLegal Only For Off-Highway Use Or Racing^^1986/Chevrolet/Corvette/Base Hatchback 2-Door/5.7L 350Cu. In. ...