there is an aluminum plate across the top of the motor that says QUAD 4take the bolts out of the middle of that and pull it straight off. the plug boots will stay attached to the coil pack on the bottom of it. the spark plugs ar in the deep holes in between the cams. If it hasn't been off in a while there is a good chance you will have to replace the plug boots(about $5.00 apiece)
they are located in the engine block. You'll need an extension to the wrench in order to get them out.
on the motor
same as with a 97. under the aluminum cover on top of the engine.
4...under the coil cover
132 ft lbs. becarefull not to snap the plugs
there are four spark plugs.
in the trunk
Under the aluminum finned cover on top of the engine.
Screwed into the head.
under what appears to be the valve cover on top of the engine
take off the plastic cover and under where the silver cover on the engine says ecotech is where the spark plugs are located
Take the valve cover off and the plugs will be right under it