I believe it is the METRA 70-1784 but it says it's for Audi's and VW's which is kind of odd. If someone could clarify if thats the correct one. I don't really doubt it is because it's listed on installer.com
DD: 2003 Ford Focus ZX5-65mm TB, Intake, Long Tube Header, 2.5" exhaust, UDP, Tom's Tune. Almost 200k miles and still running strong!