Edelbrock Buick B4 B ManifoldEdelbrock part #2515 Buick B 4B intake manifold is a resurrection of the popular B 4B manifold made in the late 1960s for street 400 430 455 c. i. d. Buick V8's. The only change to the original design is the addition of our proven Performer style carb pad that accepts either square bore or spread bore carbs, making this manifold an excellent choice for both restoration and performance minded Buick fans. Edelbrock's Patented Dual plane, low rise design