Ford 2003 Mustang Workshop Manual page 2809

16. Install a new rear output shaft bearing, then fifth gear. Using the special tool, press both the
bearing and gear into place.
17. Reposition the output shaft with the input end facing upward.
18. Install the second gear synchronizer blocking ring. Rotate the blocking ring until seated.
19. Install the second gear synchronizer outer cone and the second gear synchronizer inner cone.
20. Install the second gear bearing.