The books call for a B18 thermostat to start to open at 167 degrees F. B20 at 180 degrees. I have new 180s in both cars but the B18 is running warmer than it used to, close to the red line. The cooler thermostat doesn't seem to be readily available. Eric Hamlet says he has them but they don't show up on his web site and I keep forgetting to call him during the week. My mind is on other things I guess. Someone on FB said that one from a B16 is what I should look for, that they open in the proper heat range. Any opinions? I need the 43mm interior light bulb too, festoon ends. There's a million different ones on EBAY but they are 1-3 millimeters shorter and are led or something.