Welcome to TN

For once, someone else on here who isn't too far away
For the gen 4 you could get the TRD springs, which lower about 1" to 1.5", although you didn't mention lowering but that would help. Not sure about other springs for the gen 4.
You could also get the TRD rear sway bar and some sort of front strut tower bar to help out the suspension. The FSTB will reduce body roll slightly; typically people recommend the RSB over FSTB because it helps overall handling more.
But usually people suggest that if you are to get lowering springs that you may want to look into getting new struts as well, as the increased strain may cause them more wear and tear (at least for gen 3 due to the age).
Even though you only mentioned the springs the other two would help a bit, the RSB more so then the FSTB. Hope that helps you a bit, although the gen 4 guys can probably help a bit more
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1992 Toyota Camry LE 5SFE 4 cyl. 2.2L
A.K.A. "Ron Burgundy"
198,000 mi. (as of February 9th, 2010) and counting