I've done the Toyota caliper brake conversion. It was a piece of cake. I'm now doing the ZX brake cylinder/booster conversion. Well, I'm not doing the booster now because the one I got from the scrap yard was leaking so I put the original one back on with the 15/16 cylinder. I've bled the cylinder and then bled the brakes from furtherest to closest, but the pedal won't pump up. I even tried using the regulator valve from a ZX. Thinking it would devert more fluid to the fronts or the old one was clogged. It still won't pump up. I reall need help here. I can't figure it out. The brakes work with the pedal to the floor, but I can't get the pedal to engage from the get go. Do I need to adjust the push rod from the booster to the cylinder? It looked right when I put it on. Can someone please help me get brakes on my '74 260Z. Thanks way in advance.