Where is the thermostat?

Hi, Does anyone know where the thermostat is located on a 1999 Century?

Looking at the left side of engine (driver's side) just follow the upper radiator hose to the lower intake manifold area right below the throttle body. The thermostat is in a tight spot due to the exhaust crossover pipe and takes time to remove/replace.

Thanks bnaylor, I'll follow the hose o.k., but I have no idea what a throttle body is.

The TB is what the air intake ducting connects to from the air filter assembly. It meters air based on the accelerator position to the fuel injection system. Needless to say it is the other part in the way that makes thermostat removal difficult. Good luck!