Ford 2003 Mustang Workshop Manual page 3215

All vehicles
8. Remove the nuts and disconnect the lines.
Discard the O-ring seals.
Vehicles with 4WABS
9. Remove the hydraulic control unit upper bracket bolts.
10. Raise the vehicle.
11. Remove the hydraulic control unit lower bracket bolt and position the hydraulic control unit
aside.
12. Lower the vehicle.
All vehicles
13. Remove the bolts and the radiator brackets.