We have found it to make a world of improvement in the cornering of our Neon due to flatter cornering stance and reduced front end plow. You must upgrade the front bar before installing new rear bar to avoid creating oversteer under hard driving conditions. Autocrossers have their own opinions about this, however. There are various OEM spring sets, but these vary more by equipment level than model to keep ride height consistent as weight changes. Note that Sport Sedans have the straight Touring suspension while Sport Coupes have the Touring struts and the Competition swaybars.
Parts list first followed by procedure short and clear as possible.
Be sure to point out quantity to parts clerk so that you get all parts in first trip. Change oil while under there anyway. All bushings appear to be same but safest to put back in original order. Remove bolts and drop bar, noting which side is up. Peel retainer bushing off old bar and place in same position on new bar.