I'm running Swift Springs - 6/4kg...my ride is a 100x better than running my normal Cusco setup. Running Cusco zero2's w/Swift Springs with the rest of stock suspension. The only other thing I added was subframe spacers. This is my dd and my car very balanced even for those 90mph highway curves.
oh yeah my Cusco springs that I had in there are 10/8kg. Shock setting is still at 2-front/ 1-rear