Holley Model 4160 - 450 CFM - List #9776 Tunnel Ram Carbs. Very good condition, mechanical secondary. used on a mild build 327 Small Block Chevy. Also check out the 180 degree headers and altered factory Corvette rear sump oil pan with windage tray. (Came off a 1965 350HP 327 Corvette engine. $500 for headers and oil pan.