I'm enjoying reading all of this as I've recently done a good bit of this as well. I installed the Mach V springs which lowered it about 1.5" (fun getting it back OFF the lift when done) and an NM Engineering 22mm rear sway bar along with the M7 front strut brace. I had a 4 wheel alignment by the guys at Mach V done and after a week for everything to settle, I headed out to Skyline Drive yesterday. Oh, I also put in a cold air intake so I get to hear the car working. Wow, what a difference! We hear people use the term "cornered like it's on rails"... I'll go one better. Corners like a rollercoaster! There's no doubt that the car will take on the corners and I don't feel like I ever got close to it's limits. I came off of skyline at Hwy 211 and went all the way down the hill and had so much fun, I turned around and went back up and it was twice as much fun!
I'm installing an M7 pre intercooler charge pipe this coming weekend and then a cat back exhaust before the end of the year.
What I "say" my final change will be is new tires and, for now, I'm seriously looking at the Kumho Ecsta ASX tires in 215-50/16 so I can put them on the stock rims.
With all of the wisdom in the group, I have to ask... What should I consider for next year? JCW ECU programming? lighter wheels?