the thermostat should be located in the water neck that is connected to the upper radiator hose. the water neck should be bolted to the intake or engine block.
right behind the alternator and AC compressor, you will have to remove one of these to get the housing out, very light with the rtv on both sides of gasket, dodges are the only ones i have to add rtv to t-stat gasket
Most of the time it is located right at either the intake or the outlet of the radiator. Often just taking off the hoses will help you locate which side the thermostat is located.
Its on the top of the motor. Follow the upper radiator hose to where it enters the intake manifold. The thermostat will be right there. There will be just 2 bolts to remove to take out the thermostat. When replacing it make sure you replace the gasket also, or use some RTV silicone to seal it.
