I have never had any luck with running a 160 stat, seems to run too hot or overheat. I currently am running a 180 stat and I still seem to run over 200 degrees, but am not positive exactly what it is. I checked with one of those laser things at the T-stat neck the other day when it was about 80 outside and it showed 207. Not sure how accurate it is, but everytime I went to try and start the car, it was acting like I was having some heat soak issues with the starter, which I never had before, but I just recently removed the starter to swap the tranny out and I put the starter back in after tranny was swapped. Should I be running a 190 stat instead of the 180?