As for chassis braces, a
strut bar makes a big difference to steering response and is pretty cheap all things considered. Evilla also makes a
lower tie bar and
rear sway bar. Lower tie bar did make a difference, but not as significant, and I haven't installed the rear sway bar on my car yet.
As for suspension itself, it depends on how expensive you want to go. If you want to just lower it, M&S Storm
lowering springs will fit your car and lower it for $300. You can get cheap coilovers (
Rev9) for around $500, decent coilovers from $600 (
lower spec Godspeed) to $800 (
higher-spec Godspeed), and great coilovers for $1200 (
BCRacing).
