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Message: <blockquote data-quote="caseypayne69" data-source="post: 476469" data-attributes="member: 8332">Ha no these are SVO heads now known as FRPP heads.M-6049-D46 Complete 1996-98 OnlyAdd approximately 35 horsepower over production 4.6L SOHC heads.Look at the code on PI headsHere is the PI heads<a href="http://www.fordracingparts.com/parts/part_details.asp?PartKeyField=6123" target="_blank">http://www.fordracingparts.com/parts/part_details.asp?PartKeyField=6123</a>M-6049-P46** Right HandM-6050-P46** Left HandCurrent Production 4.6L SOHC 2V Romeo engine aluminum cylinder headsFully machined and assembled with production Mustang GT valvetrain and camshaftGreat for custom engine buildsLess expensive than replacing valvetrain and remachining a used cylinder headLess expensive alternative to aftermarket performance headsCan be used on 1996-98 engines with additional modifications and parts</blockquote>