For those (few) interested in an OEM cat-back exhaust system, here are the part numbers for everything from the rear of the converters on back, including pipes, gaskets, nuts, bolts, and rubber supports for a 2004 Land Cruiser. In parentheses are how many of each part are needed if more than one. The total discounted price was $898. A couple hours hard work for my son and me got the old one off and the new one on. Very quiet at all speeds; my muffler must have been rust- holed for a while.
Muffler 17403-50151
Resonator 17405-50030
Connector pipe 17450-50070
Gasket 90080-43028 (3)
Gasket 17451-50050
Clamp 17452-50050
Bolt/washer 91641-80840
Bolt/washer 91651-60835 (2)
Bolt 90080-10229 (6)
Nut 90177-A0004 (6)
Nut 90179-08024 (2)
Support 17565-13030 (2)
Support 17565-74280 (2)
Support 17565-46040 (2)
Damper 17581-50140
Insulator 17551-50091
Muffler 17403-50151
Resonator 17405-50030
Connector pipe 17450-50070
Gasket 90080-43028 (3)
Gasket 17451-50050
Clamp 17452-50050
Bolt/washer 91641-80840
Bolt/washer 91651-60835 (2)
Bolt 90080-10229 (6)
Nut 90177-A0004 (6)
Nut 90179-08024 (2)
Support 17565-13030 (2)
Support 17565-74280 (2)
Support 17565-46040 (2)
Damper 17581-50140
Insulator 17551-50091