I think Topless gives good advice.
That said, I have been slowly upgrading the car towards spec and started with the GT3 sway bar upfront and Tarrett rear + Tarrett drop links all around and saw a huge improvement over how tight the car felt. At 120K miles the suspension was shot and that helped improve things until I was ready for the PSS9s.
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Michael
http://imgur.com/aiZcIk8
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