Here's a close up of the housing of the thermostat on my Zetec Cougar, it should be the same as yours. I also added a few things to make it easier to find on yours.
Number 1 is the coil pack, it's right above the housing. Num 2 is the first bolt on the valve cover closed to the housing. Three is the housing itself. It only has 3 bolts and two hoses to get off. The bolt just above the number 3 is not one of them. And 4 is the turbo, oh wait you guys don't have that.
Just a little visual to help the rest of you out. It is a real easy mod, hardest part is draining a gallon or so of fluid so you don't get a bunch of it running down the engine when you change the thermo.
Laters.
