The Edelbrock #3825 70mm throttle body is cast, machined and assembled by Edelbrock. The throttle body is assembled with a throttle position sensor. The customer re-uses their original idle air bypass solenoid. The throttle body requires the use of the 70mm EGR plate (#3828). Both the throttle body and the EGR plate are covered by E.O. D-215-18. The 70mm combination is not recommended for stock applications. It fits our #3821 manifold or Ford's GT-40 with no modifications. Satin Finish