Where would the thermostat for a 1998 Land rover discovery be located?

Have an overheating land rover discovery and believe the thermostat is stuck closed and would like to replace it. Is this located on the outlet of the water pump?|||I've always followed the top radiator hose back to the engine, that's usually where the thermostat housing is located.|||follow the top radiator hose. if on the end of the hose has a housing then the thermostat is under it.|||if its petrol v8 in the bottom hose