You could look into some Feal 441 coilovers that come with swift springs and camber plates $1350.
http://www.rallyracingsuspension.com/page16.php
Then add a Nameless Performance catted overpipe/frontpipe to the mix $419.
http://shop.namelessperformance.com/...e-factory-fit/
Add the two above parts to what you have with a tune and a proper alignment.
Alakazam!
Your car can be competitive nationally if you can drive