Bolt-in replacement for stock engines "Square" motor configuration (equal bore and stroke) produces excellent torque, greatly increases engine life S&S Cycle Super G carburetor with Classic Teardrop air cleaner S&S Cycle high flow Super Stock cylinder heads High strength supreme rods, S&S Cycle cylinders, and forged pistons Adjustable pushrods and pushrod cover assemblies Hydraulic tappets and S&S Cycle forged roller rocker arms S&S Cycle billet gear cover kit and billet aluminum rocker covers Now includes oil pump and oil filter mount 4" Bore, 4" Stroke 4.420" Cylinder length S&S Cycle 600 Camshafts Forged Piston 1 year parts only warranty Requires 1991-2003 style primary components and transmission, will not accept 1986-90 4 speed transmission, charging or primary Must purchase all primary components, starter charging system, ignition system, transmission components seperatly Not legal for sale or use in California on any pollution controlled motor vehicles