Infiniti G37before: 2008 Infiniti G37s Muffler Bypass, Regular $200 each or Stainless $250 eachafter: 2008 Infiniti G37s Muffler Bypass, Regular $200 each or Stainless $250 eachInfiniti G37 Exhaust Passenger Side Catalytic Converter Fabrication and Replacement with labor-$750Infiniti G37 Aftermarket Primary Catalytic Converter $650 eachInfiniti G37 Exhaust Y pipe & Both Flex Pipes, Regular $470, Stainless Steel Flex Pipe with Regular Piping $550, Complete Stainless Steel -$650← Nissan RougeDodge Caravan →