The Whiteline sway bars came with replacement bushings, are you referring to those? If so, they were replaced, and the old ones are now sitting in my living room, hanging off the stock sway bars.
For the fronts, I have the Whiteline front trailing arm bushings, and am planning to get the bushings for the front control arms (W0590). I also have the roll centre adjustment kit, which has made a huge difference in keeping the car much flatter through the corners, and seems to have reduced some of the initial understeer I experienced after installing the Zeal Function X coilovers (10kg F / 8kg R)
For the rear, I have the Whiteline rear bumpsteer correction kit and the Whiteline rear differential to chassis bushing kits installed, and plan to get the rear control arm bushing kit (W0591)
Most likely, I will have the following bits installed as well
1. stock drop-links (KLC002 and KLC39)
2. inner control arm bushing kit (W0588)
3. lower shock control arm bushing kit (W0589)
I can't seem to find a Whiteline part number for the rear trailing arm bushing kit, else I would get them as well (these are the times I wish I could get some form of sponsorship from Whiteline...)
I'll probably stay off the rear strut brace then, and use the money on the bushings and more R-compound donuts -- they are probably the best bang for the buck (or lowest cost per second) mod for the track and autocross.
And Warr, thanks again for the advice