Found some extra info from Toyota today; (20 Series) - V6 muffler Part No: 174300A131 (36 Series) Sportivo, Altise, Ateva - 4cyl muffler Part No: 147300H081 (36 Series) Altise, Ateva and Grande - V6 muffler Part No: 174300A230 (36 Series) Altise Sport, Sportivo and Azura (Factory fitted "Sports Muffler") - V6 muffler Part No: 174300A251 Rear Muffler Gasket (4cyl and V6) - Part No: 9091706073 Sportivo Sports Muffler -Part No: PZQ1933020 (no longer available) Here is the factory brochure for the 36 series Camry range; http://www.toyota.com.au/TWR/content/static/13049.pdf Glenn