The Edelbrock Throttle Linkage Kit is designed for dual carburetor equipped street tunnel ram manifolds. It works with sideways mounted carburetors in vehicles operating below 7, 500 RPM where low-end torque is not a prime factor. The distance from carburetor center to carburetor center should be 8. 88 and the manifold top with bottom height should be 9. 25. It does not fit raised port cylinder heads.