I'm selling the back halfs of a Stillen exhaust system. It was on my most recent Z when I purchased, and I am getting a GReddy Evo 2. The exhaust is in great condition, and it's the dual exhaust tips, not the quad. The sound is a tiny bit quieter, but still very throaty and aggressive at the same time. $500 I will entertain offers, but not much room, as the exhaust is still in very good condition. Correct me if I'm wrong, but it goes for $995 retail with the X pipe, so with the back halfs only your looking around $750 new. $500. Text me for pics. 614.653.0895