T304 Stainless Steel Catback Exhaust System Dual N1 Muffler Nissan Altima 07-10 T304 Stainless Steel Catback Exhaust System Dual N1 Muffler 4" Outlet with Removable Silencer 1x Catback Exhaust Muffler Color: Polished Stainless Steel Installation manual is not included & Professional installation is highly recommended