I would like to get a definitive answer about the routing of the heater hoses if you do not use a heater. I have a 49 pickup and want to smooth out my firewall. I will not be using a heater at all. Will it divert the flow of coolant if I simple plug up the hole in the water pump and the one in the thermostat housing or do I need to use a small hose to connect these two openings. I know nothing about the water jacket and how it flows, also do I need to install an over flow container for the radiator, I seem to be losing radiator fluid and it appears to ne coming out of the over flow tube running down the side of the radiator. I do not have a thermostat in my system at this time, is necessary to run one? As you all can see I do need some advice on this cooling system thing, sure would appreciate any help on this subject. Thanks