As i said before im want to work on my cars handling, so i decided to start with changing my suspension, im going to instal sti suspenions front and back, is that a good idea? and second im going to get whiteline sway bars also front and back. is that good enough to enhance my cars handling?
DO you plan to AutoCross or just stick better on the street?? Front and rear sways are a great start.. Might as well swap out those plastic endlinks and mounts while your under there.. Slidding a set of widders rubber under there is also a quick way to maximise grip, how ever if they do break lose on you they will not regrip like narrower tires.. This means if they start to slid they are going to slide!!! Why do you want STI suspension? Are your talking springs or arms and all that? Do some research, I know you will be able to build a better setup with aftermarket parts that will allow for more adjustment.
02 WRX.. "It's fun when it runs.. Problem is that it hardly ever does..."
If your going with the full STI setup, springs, struts, all the arms then you will have some improvement. The sway bars will make the most improvement out of all that. Like said above, don't forget the end links and better rubber ( tires ) will also help alot. Whiteline is very nice stuff, I installed a rear sway bar for a friend and it fit perfect!