For dual inlet vacuum secondary carburetors to replace the original metering plate with a billet metering block. Kit includes all necessary gaskets for conversion. Avaliable in Black. NOTE: This conversion will require a longer dual feed line. Product Features:Secondary Conversion Upgrade KitReplaces Original Metering Plate on Dual-Inlet, Vac-Secondary CarbsMade from High-Quality Billet AluminumBlack Anodized FinishRequires New Dual-Feed Line