Weiand 8123 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: 19.80 lbs Fitment: 1976/Chevrolet/Impala/Sport Sedan 4-Door/7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated::N/ A^^1976/Chevrolet/Impala/S Sedan 4-Door/7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated::N/ A^^1976/Chevrolet/Impala/Custom Landau Coupe 2-Door/7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated::N/ A^^1976/Chevrolet/Impala/Custom Coupe 2-Door/7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated::N/ A^^1976/Chevrolet/Impala/Base Wagon 4-Door/7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated::N/ A^^1976/Chevrolet/Caprice/Classic Sport Sedan 4-Door/7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated::N/ A^^1976/Chevrolet/Caprice/Classic Sedan 4-Door/7.4L 45...