these are used webers , made in italy , chromed out with polished adapters to mount on a twin square four barrel carbs mounting . were on a blown chevy small block tee bucket . never ran them myself . there is some pics of them mounted on a offy twin inline four barrel carb manifold , just for looks on an intake , INTAKE MANIFOLD IS NOT INCLUDED in sale of the weber carbs setup . 4zero8-two94-two597shop 4zero8-5two8-55zero1cel