hi i'm bill welcome to just answer please remember I am NOT there in front of you! my answers are based on your information
the thermostat is in the LOWER radiator hose
it is mounted in a plastic housing attached to the front of the engine where the lower radiator hose attaches to the engine.
there are 2, 8mm bolts attaching it to the timing cover and NO gasket there is an "O" ring attached to the thermostat for sealing
also remember this engine uses a special orange/pink coolant and it is NOT compatable with the standard green coolant you find in many parts stores using regular coolant WILL damage the cooling system
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