Edelbrock Dual Quad Kit Perf RPM Chevy 409 Inwin Lg PortThe Edelbrock #2069 RPM Dual Quad manifold and carb kit is designed for 348 409 "W Series" Chevy, small port applications. A huge hit among street rodders, this Dual Quad Kits offer the ultimate set up for anyone who wants the look and the performance of dual quad carbs. The Edelbrock #2069 includes an Edelbrock RPM or RPM Air Gap Dual Quad intake manifold and two 500 cfm Thunder Series AVS carburetors calibrated specifically for dual quad