25. Raise the vehicle. For additional information, refer to Section 100-02.
26. Drain the transmission fluid by lowering the transaxle pan.
27. Disconnect the front HO2S sensor connector.
28. Disconnect the rear HO2S sensor connector.
29. Remove the rear bolts from the front catalytic converter assembly.
30. Remove the nut from the rear catalytic converter assembly.
31. Remove the rear catalytic converter and cross over pipe assembly.
2002 Taurus/Sable Workshop Manual
http://www.fordtechservice.dealerconnection.com/pubs/content/~WS2H/~MUS~LEN/20/