There used to be several brands of sway bar for the MKIII available. Some were monsters and other really won't any better than a fresh OEM unit. Whiteline is one of the few that are still produced and available in the US.
Prothane is the popular choice for the bushings in a lot of my circles... Energy Suspension is another brand (Horsepower Freaks carries these). I don't know if any of these companies makes a full kit for the MKIII Supra but I think someone did a group buy of a full kit on SM quite a while ago; It may be worth looking for to find out which manufacturer it was.
Suspension Techniques makes sway bars for the MKIII Supra. It'll probably be less expensive than the Whiteline but a fraction softer.
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