Ok so my dual master cylinder conversion has gone smoothly so far, but I am not sure if I will even need the proportioning valve I have. I have a 67 Master cylinder and a 66 coupe with the front disk option. Couldn't I just run the line directly from the 67 distribution block to the rear brakes? The reason I ask is that when I planned this conversion, I ordered some brand new steel brake lined from classic tube (excellent quality BTW) and I am afraid that if I use the proportioning valve I won't have enough brake line since what I ordered was to replace the lines on a jelly jar 66. I really don't want to have to flare and add fittings to blank line but I will if I have to. If that's the case where have you guys bought the brake line and fittings in the past? Can they be had at autozone? Did anyone else have this problem when they did their conversion?