Do a hunt around for Cusco Strutbars (or strut brace) I've got a carbon fibre cusco upper strut brace and a lower brace.
I've not got the rear brace yet but they do make one that's supposed to be quite good.
Upper brace
I got mine from here
http://www.takakaira.com/
I'm sure there are US dealers.
The front end braces do make a big difference in steering response. Much tighter feel now.
Cusco arn't the only suppliers obviously. Do a hunt around and see what you can find.