I'm curious what the anti-sway bar in the rear with the softer springs would do. You put the softer springs in the rear to cure some of the oversteer but wonder if the bar would help with some of the roll without bringing back all of the oversteer.
It does. At least for my driving style and without an LSD. Helps keep weight on that inside tire.
Current setup.
Front: 600# front springs, 8 clicks from full soft.
Rear: stock replacement struts, Stock '05 SS springs (1 coil removed), 18mm sway bar.
It is stiff up front but it handles really well and builds confidence. It's starting to feel like racing a shifter kart. Not quite at the same grips levels yet though.
Front can skip across washboard surface, creating understeer.
If I could change something: I would like to get the BC coilovers with with a slightly stiffer spring rate than I have now. Firm up the dampening a little in the rear to slow down weight transfer from side to side during quick directional changes.
Try 500# springs in the front.
This might not be for everyone, most likely not very street friendly.