A long wobble extension helps on the passenger side front two plugs and a little on the drivers side. In general a 3/8" swivel head ratchet also helps. A short extension (3") is best on the rear drivers side plug. If it is the same as a 1997, you want to remove the outside air box,
Throw a very small amount of anti-seize on the threads when you put it back together. When you do that, back the torque down to about 15 ft-lbs. You only have to do that one time. A torque wrench is important on new plugs because you are crushing the gasket and you don't have a feel for the torque - aluminum is easy to strip with too much torque. Make sure you always had tighten the plugs as far as you can by hand, this will help you avoid stripping the threads.
