In answer to the original question, try looking into the Whiteline range of Celica suspension (from Aussie). Gets excellent reviews from people overseas ... very popular upgrade for "alltracks" in the USA.
Quite well priced too. They do adjustable sway bars, strut braces, springs, shocks, bushes etc. Apparently the shocks they use with the default kit are a bit soft, but you can pick and choose the parts you want. The most popular part is the adjustable rear sway bar, which apparently makes one hell of a difference.
http://www.whiteline.com.au/