Early 1965 Mustang HiPo 289 Special K code, Autolite 4100 series, from May 1964 and on, 1.12 venturi size carburetor, part number C4OF-AL, application manual transmission. Recently rebuilt using a no longer available from Ford, Motorcraft carb rebuild kit. Original venturi cluster assemblies, primary F and secondary BA, jets primary 51 and secondaries 70, brass float levels set to spec at 29/64. Choke pieces new and plated. Correct molded in choke stop and non-drilled and non-tapped holes. The top cover vent tube is also non-drilled. Ready to install on your K code Mustang. Please see pictures and ask questions. A very nice carb. $950. Thank you. Cory