Whiteline suspension do a whole tuned kit for the St185 - for about 1500 dollars
They have all the bits you need - check out their site !
www.whiteline.com.au i think - or search for it
Whats it for specifically ? They also have a big write up on handling for the st185..
They have a way too undersized rear bar that make sthe back end handle like shit - hence why its going in my car asap !