RBS stocks a large line of carb adpts. and here is another shining example. This carb adpt. starts as a solid chunk of one inch thick billet alum. and is machined to fit all 4-71 GM type roots blowers allowing you to mount one Dominator type carb a top your supercharger.
The adpt. is show polished and includes all gaskets and mounting hardware to bolt to the supercharger. Fits all standard Holley 4500 type flanges.