While I agree that you can safely and without issue run a cooler t-stat, even a 160°, I don't agree that you should go ahead and do it.
I know I have said this all before, and some people may agree with me, but there is nothing to be gained by running a cooler t-stat on a car that is properly modded, and it will in fact, lessen your performance and increase your fuel use. So not only will you be spending more money on fuel, but you will not see any increase in performance, and often will see a decrease in performance.
As stated, stock should be a 195°F thermostat. If you are going to run a cooler thermostat, like I do at the track in the summer, to get the most benefit, you will need to change your fan turn on points. Otherwise, you fans won't turn on until the stock points which is somewhere around 210°.
Again, you can do what you want, but many people don't understand what happens when they run a cooler t-stat, and 98% of the time, it is not needed (if modded correctly), especially on a stock car.
