Originally Posted by Master D

I found the biggest change I made was the 24mm rear sway bar with heavy duty end links heavy duty mounting kit.

Increases turn in massivly and would also eliminate under steer as it livens up the rear end.

I put progressive rate springs on my standard STi shocks and I them to be an excellent compromise between track & road driving.

I found a cat back exhaust for only a couple of hundred dollars from eBay. Full stainless excellent quality.
Before I go to the track, get a good quality track orientated pads.