Hmmm. The front port of a master cylinder is always the port closest to the pushrod, and always goes to the frt brakes. Check for the pedal height off the floor when a bleeder screw for both the frt and back are open, and fluid bled off. You should have about 1 inch of clearance off the floor. Then figure out how much you can safely shorten the pedal.Also, most vehicles have a pedal stop, to keep it from coming up to high, but still have some play in the pushrod to the piston in the master cylinder.