The coolant pipes have been upgraded with Sharkwerks metal collars, eliminating the common factory failure point. The camshafts have also been replaced with new units and pinned. The car comes with extensive documentation. It was serviced by a main Porsche dealer when new and has since been maintained by the same respected Porsche specialist. A custom exhaust has been fitted. The system has been correctly tuned to the car, with no check-engine lights or fault codes. I have owned the car since 52,000 miles and am only selling due to other financial commitments.