I have been working to do the same stuff, remove a lot from my engine bay and clean it up a little. That part you mentioned at first is part of the ABS, and you would want to remove that and the modulator assembly at the same time if you did it and replace it with a 40/40 proportioning valve and the appropriate lines. I just got the kit with the prop valve and the lines for around $150 shipped, I could give you the guys info if you want it PM me. I also have removed my A/C since I never use it anyways and getting all those lines and the compressor makes a big difference. I am considering removing the PS, but I am curious how tough the steering would be. I am also going to relocate my battery to the trunk most likely, and between all that stuff you clear up a ton of space. You could also relocate the fuse box by the strut tower on the passenger side which I may do so I can install my mugen strut bar.