The engine is either a 2.0L I4 or a 2.5L V6. If the trim is GL (there is no GT) then most likely you have the 2.0L.
Not sure on the plug, the stuff I've used fight tightly, but didn't require much effort.
I have an engine block heater in the SVT, but since I don't drive the car in the winter it never gets used.
The lever for the tilt steering is on the left side of the column, near the base.
The rear window defrost is the button to the left of the wheel, but otherwise you're spot on.
