Edelbrock 2111 Performer Intake Manifold Basic operating RPM is from idle to 5,500 RPM Intake is made of aluminum material with a natural finish Intake style is dual plane and carburetor quantity is single Performer is a 90 degree V6 and non-EGR (Electronic Gas Recirculation) Intake is 50-state street legal, when used with the correct carburetor and in the correct application