Ok, I'm looking to improve my handling a bit more. The mods I have so far (86 na) are:

-Eibach Pro Kit springs (0.8 inch lower)
-KYB shocks
-Eibach sway bars (front and rear)
-14" Momo Rims with Toyo Tires (205 60 R14)

Things I'm considering:
-bigger rims (16 or 17 inch?) with lower profile tires (40's or 50's?)
-Poly urethane bushings
-Disable DTSS
-Strut tower bracing (front upper, lower, and/or rear upper?)

What is most cost effective. Am I forgetting anything?

 

what about a brake upgrade to the 5lug stuff?

 

If you don't already so it you should start autocrossing. That is the best thing you can do to imporve your driving. When first starting it can be humbling experience but there are some nice people out there that like to help newcomers to the sport. If you already autocross then you know what I'm talking about.

If must replace something on your car disable the DTSS then upgrade the brakes or at least get some good brake pads like Hawks.