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Message: <blockquote data-quote="reivaxtorres" data-source="post: 754761" data-attributes="member: 8890">the difference between the PI cams and the NPI cams is lift and duration. i believe the PI cams have a longer duration (the time the valve stays open) and a higher lift (how much the valve is opened). because of this, the car actually does gain quite a bit of power, if i remember right you would be looking at getting about 10-15rwhp on an manual car, not sure for the auto. you can use the PI cams as a daily driver, afterall ford used them in the 99+ cars. you can find them for cheap, less than $100 a pair ( i would pay between $60-80). try to get the Romeo PI cams, these are identical to your cams because they have the bolt-in cam gear, vs the Windsor cams which have a press on-gear.</blockquote>