I know this may be hard to predict, but I'm looking for opinions on long term reliability of the S65. I've read the forums regarding reliability issues such as valve springs, rod bearings and throttle actuators. My car has 35k miles, about 10 track days and 6 oil changes as well as full maintenance including spark plug change at 28k. The car has been absolutely reliable so far, but I'm concerned about catastrophic engine failure, such as from a failed valve spring. Please let me know what you have experienced, as I'd prefer to keep the car if possible. Thanks.