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Best guess is that it will need new O2 sensors (not sure if pre- or post-cat) and a coolant thermostat. The intake air temp sensor could just be unplugged as it can be easily forgotten when the intake plenum is reinstalled.
Nothing abnormal for the mileage though, I replaced my O2 sensors and coolant thermostat at 69k also. Parts alone should cost no more than $350.
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