Make sure you do your research on how to install those onto the Duratec before purchasing. Most say they are more work than they are worth.
2004 SVT: bewst'd!
2010 Ford Escape 3.0 V6
2004 F350 6.8L V10
1986 XR4Ti 2.3L Turbo, 15 psi
2007 ST ; formally bewst'd - R.I.P