hmm... I just got 2001 Integra GSR rear discs for my car, and they came with the prop. valve as well. I was about to install them today but then I found out the same place that I got these from also has the GSR front spindles/calipers/rotors as well. So I was figuring what the hell I might as well get those also, so now I am thinking about going ahead and getting the full GSR brake change over with the master cylinder and everything. The thing is, the GSR all this is coming from had ABS. Can I still use the master cylinder on my car without ABS?