No pedal after bleeding brakes

Well I finally got some pedal!! I had the calipers on the wrong sides. The bleeder valve wasn't at the top. :drunken: But there is still a small problem. I bled the brakes and the pedal was hard. I started the engine and went for a little ride, at the stop sign the pedal went down about half way. The master cyl is a remanufactured for a 73 dart, the booster I'm using is for a 72. Should I put on a master cyl for a 72 to match the booster. :?