This Kit gives all necessary components to install a  Aerospace vacuum Pump on a Big Block Chevy. This Kit Includes, 3 vane vacuum pump with 5" pulley and mounting bracket, mandrel drive kit, vacuum breather overflow tank, 6 foot of stainless # 12 line, 3 straight # 12 AN hose ends, one 90 degree double swivel #12 hose end, valve cover bung and direct port vacuum relief valve. Kit also includes grade 8 hardware. This superior kit is constructed of billet aluminum and is 100% made in the USA.