Ford Performance has taken the technology and hardware developed for the Shelby GT350 Mustang and has created the ultimate Naturally Aspirated, 5.2L cross-plane crankshaft crate engine. With a rating of 580 horsepower, the new Aluminator 5.2 XS is the most powerful naturally aspirated modular crate engine ever built by Ford Performance. This is the worthy successor of our previous rendition-the 'A50XS'. Every Aluminator is hand assembled by the same technicians that build the Mustang Cobra Jet drag racing engines. Premium aftermarket components are used to ensure durability like unique Manley connecting rods with ARP rod bolts and Mahle(R) forged pistons. Unique components developed specifically for the Cobra Jet racing program are used including Cobra Jet short runner-high RPM intake manifold, 1517 CFM dual 65mm CJ Throttle Body, and Competition High RPM pulse ring. Ford Performance Engineers developed a balanced combination of high end, 580 horsepower and strong mid-range torque with the Cobra Jet intake manifold, unique camshafts and fully CNC ported GT350 cylinder heads. ** Incl. Ford Performance M-9424-M50CJ Cobra Jet tuned intake (will not clear production 2015-2017 hood without modification). Please contact Techline for more information. Ford Performance M-12405-M50A zero (0) heat range spark plugs; Ford Performance M-6731-FL820 oil filter (quantity-1 included); 200 amp alternator and Front Engine Accessory Drive (FEAD) kit as used on the Cobra Jet race car; Vehicle harness and PCM not included. Use Ford Performance Control Pack which contains wiring, PCM and installation kit M-6017-504V -designed for street rod/project car installation with a manual transmission. For automatic transmission version, please see M-6017-M50A Control Pack-custom calibration required with either control pack! Engine does not include engine harness or flywheel/flex plate; Engine mount bosses and bell housing mount pattern common to 4.6L modular engines. Headers Not Included