By the way, I have a custom setup on the way for our STi project vehicle...
JIC FLT-A2 Race Spec Coilovers @ 12kg/mm front, 10kg/mm rear springrate, custom valved to support the springs and control a 27mm front sway bar and a 24-28mm rear adjustable bar.
Those springrates convert over into something approaching 700lb/in in the front.
I'll keep you posted on the results.