AED billet throttle linkage and spring brackets shine with cool, customized looks and perfect performance underthehood. They not only provide you with strength and durability, but they also allow you to customize and enhance your engine compartment. AED billet throttle linkage and spring brackets are designed for Holley and AED carburetors. Holley 4150; Fits GM Cable; Red Anodized; Billet Aluminum;