M C rod??

Does the pedal get hard? After its hard is there still an inch or two between it and the floor?
If it doesnt get hard,fix that first.
Then if the pedal is uncomfortably low, a longer pushrod will bring it up. There is a stop,I think, at the top of the under-dash-bracket. If the pushrod gets to be too long,the compensating port will not work, and as the pads and shoes wear, the pedal will lock-step fall, until it fails to stop the car.