Go to a reputable local stereo shop and tell them you'd like to replace your speakers in your car. You have 6.5" speakers in the front and 6" x 9" in the rear. You probably have the Bose since you have an LS model, so ask if they have 2 ohm speakers, because that's what is factory.
Do you know much about stereo's? If you do then you may be able to install them yourself, but if you don't, leave it up to the pro's.
Do you know much about stereo's? If you do then you may be able to install them yourself, but if you don't, leave it up to the pro's.