Ford 2003 Mustang Workshop Manual page 1745

36. Index-mark the driveshaft flange and the rear axle pinion flange.
37. Remove the four bolts
38. Index-mark the driveshaft at the six o'clock position.
39. CAUTION: the driveshaft flange fits tightly on the rear axle pinion flange pilot. Never
hammer on the driveshaft or any of its components to disconnect the driveshaft flange
from the pinion flange. Pry only in the area shown, with a suitable tool, to disconnect the
driveshaft flange from the pinion flange.