this is a brand new elbow and I am not going to use. Used for mock up only during my build which is still going on. Below is description from Edelbrock $125 shipped.
HIGH FLOW ELBOWS
These elbows are designed for use in high hp race applications. An internal divider optimizes flow distribution to all ports of the manifold by reducing turbulence. Intake Elbow #3814 has a universal bolt pattern and is the best way to adapt a single throttle body to a Dominator® 4500 style flange EFI manifold without sacrificing air flow. The throttle body flange accepts 90-95mm LS1, LS2 and Ford 5.0L based throttle bodies. This elbow flows 1,800 cfm @ 20.5 in H2O. Includes a universal throttle bracket.