Ford 2003 Mustang Workshop Manual page 2703

8. Remove the nuts. Position and secure the muffler and tailpipe out of the way.
9. Remove the LH nuts.
10. Remove the RH nuts.
11. Remove the dual converter Y-pipe.
12. CAUTION: Index-mark the driveshaft flange and pinion flange, and the driveshaft
slip yoke and transmission output shaft.
Remove the driveshaft. For additional information, refer to Section 205-01 .