6.2 LITER W/O SUPERCHARGER. ENGINE CODE LS3. Muffler & pipe clamp. W/O PERFORMANCE EXHAUST. Clamp for Exhaust Muffler. Clamp for Exhaust. Exhaust Tail Pipe Clamp.. Tail. Center. Intermed. Muffler and. Included with: Center Pipe, Muffler & Pipe, Muffler and Pipe.