Dear list, It has been a very long time since the thermostat in my 300G has been replaced, maybe 20 years. I seem to remember reading somewhere that the 413 HP engine used a thermostat that had holes drilled in it to assist in cooling or water flow. So here is my question. Should I obtain a thermostat (180?) from a parts store and modify it? If so, how? Bob J [Non-text portions of this message have been removed]