New velocity stacks for 2 barrel Stromberg, Holley and Ford carburetors. Available in 3 heights: 4", 7-1/2" and 11". These stacks come with our very popular Bug Dome mesh screen for insertion into your carb. Keep the bad stuff out, and look cool doing it. The polished finish and quality is as you have come to expect from us. We didn't invent the 2 barrel velocity stack, but we sure have improved it!