Stock thermostat has a desired coolant temp of 210 with fans barely kicking on at 202, then no ramping up more until 214, then 220.
This 160° thermostat will be open all the way by 175 and that will be our target temp with fans set to help maintain that with a custom tune. The resulting lower cylinder temps would then unlock the advanced ignition timing the tune is already setup to deliver in cooler temps.