I've got the Auto Exe body brace kit as well, does make a big difference, wish I had bought there strut braces as well, but I had already got a set of front and rear struts braces a month or so earlyer.
If you track your rx8, I recommend these braces.
I also use Auto EXE sway bars as well (with mixed results, but have since addjusted the front sway bar, and replaced the Mazda sway bar links).
Got the lot from Cork Sport, Recommend the guys at Cork Sport, I spent $$ $$$ with them, and had No problems at all
