Well First of all I have a 1997 RS and this is my suspension mod list

Nuespeed Sport Springs
Tokico Illuminas
Added Stock rear swaybar
Front Upper strut bar
Baer Track Brakes w/ optional slotted and cross drilled rotors
Rear Disc conversion w/ slotted and cross drilled rotors
Rear Upper strut bar
17" GSX Rims (which I plan to keep for a while, id rather spend the money going faster in a straight line)
Goodyear Eagle RSA's
Im also waiting on some front and rear lower strut bars from Glenn, hopefully they will be here soon.

What else can I do to increase my handling prowess? I know I need some better tires, but what else is there?

Toney
'97 RS 5 Speed (totaled)
15.4606@88.42 Mph
96 Toyota Celica GT
88 Toyota Supra NA-T (w/ sports package)
Got Boost?? Hell yeah I-6 turbo powah baby!