Great thread!
I'm looking for similar handling as I had on my prelude SH; OTS konis, 400F/450R GC, ST 25mm rear bar, strut braces. Originally started with the 450 springs in front, but I was much happier when I moved them to the back.
Thing is that I think the GCs were overkill for what I needed. I was lowered about an inch, never got corner balanced, once I found my ride height I kept it that way till I traded th car in...so over 2 years. I didn't even adjust the shocks too often.
On my Si, I already have the PS2 tires and I'm contemplating 2 setups:
1) HFP suspension + alignment + maybe rear anti roll bar (if I need more rotation).
2) OTS Konis with stock springs + alignment + rear anti roll bar (I'm guessing it wont rotate enough w/o it since I'll be using stock springs). I'll also be able to lower the car a tiny bit with the various circlip positions, I assume.
I'm just thinking that doing the whole GC/Koni combo is overkill since this car might only see some auto-x/HPDE action, which will be strictly for fun, not competition. Any comments or feedback on my 2 choices from the suspension gurus greatly appreciated.