Intake runner and injectors on the front of the motor... the only Zetec that had that was the 1.6L Zetec? The VIN would confirm. Also found usually on the driver side door.
2001 ZX3 2.0L Zetec-
Hatch Nation #42
Going through Rebuild See "The TICK Build Thread" for details (http://www.focusfanatics.com/forum/showthread.php?t=289168&referrerid=62897)