I drove around on stock struts with MSP springs for two years and it was nice, except for the uneven wheel gap. I got new springs when I got Tokicos and the RB kit.
For the strut bar, you need the stock MP3/MSP/P5 mounting brackets. The front swaybar is a b**** to install, it took my friend and I 5 hours of removing the subframe, cursing at parts that wouldn't come off, etc...
For the rear sway, you need the MP3/MSP endlinks and there is a slightly updated crossmember. When I say slight, it looks almost identical to the stock sedan one. I got the complete RB swaybar kit so it came with everything I needed and I used the updated one.
I'm waiting on the new pads and rotors so I can do the 5 lug swap. As soon as its done, I'll pm you about the wheels.