WARNING: This page is about a different car, the 2004 Mercury Mountaineer and 2004 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.
Drill three 6.35 mm (0.25 in) holes in the wheel knuckle.
Fig 1: Drilling Holes In Wheel Knuckle
Courtesy of FORD MOTOR CO.
Secure the brake disc shield to the wheel knuckle with three 6.35 mm (0.25 in) rivets (W701950-S100).