Product details:

These carburetor adapters from Offenhauser are designed to mount almost any carburetor onto almost any dual quad type manifold. These adapters are aluminum and will provide a smooth transition from carb to intake. - Designed for a dual quad intake manifold13.5 inch long4 inch high - Sold each - Works with # 560-5581 linkage kit available below and shown installed in additional photo above - Both carburetors will be spaced 15 inch apart center carb to center carb and 3 inch front to back center to center offset - Adapter is 7-1/2 inch center of intake base flange to center of carb mount flange - Linkage tower threads in adapter is female 1/8 inch npt thread Age Group: adult.