WARNING: This page is about a different car, the 2004 Ford Pickup, 2004 Ford Excursion, and 2004 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying 5.4L Engine - Upper End Components (1 Of 2)
Courtesy of FORD MOTOR CO.
Fig 2: Identifying 5.4L Engine - Upper End Components (2 Of 2)