OK, so there's the port just above the thermostat, but that one is holding the coolant temperature sensor for the Fuel injection system. The other one that Bad Asp has highlighted, not the water pump port, I had the water gauge thermostat. I tried putting a tee into that one so that I could have the gauge thermostat, and a fitting for the heater hose, but the tee won't go on because of interference from the front right throttle body. I wasn't sure if the heater hose could be connected via a tee into the thermostat fitting. I think I could get the tee to spin on to that port, but again, I wasn't sure that was a good location. But I do like the idea of bailing on that plug to try a different option.