Ford 2003 Mustang Workshop Manual page 2555

Install the output shaft and output shaft ring gear.
5. Install the No. 8 bearing.
6. Install the direct clutch.
7. NOTE: The reverse band support retaining ring is used for assembly purposes during
production. The reverse band support retaining ring is not required during assembly and it will
not affect the operation of the transmission.
Install the reverse band support retaining ring.