Ford 2003 Mustang Workshop Manual page 181

2. Position a jack stand under the front suspension lower control arm inboard of the spring seat
and raise the arm into position.
3. NOTE: The front suspension lower arm nuts must be tightened with the suspension at curb
height.
Install the bolts and nuts. Do not tighten the bolts at this time.
4. Make sure the spring is correctly positioned in the front suspension lower arm.
1. Spring must not cover this hole.
2. Spring must cover this hole.
5. Remove the special tool.