wilwood problems

Kind of a long story but it might help with getting a answer. So I bought a 71 plymouth scamp 3 years ago to build a nice drivers car. I've been working on it and getting upgraded parts for the car, and wilwood brakes was my first upgrade. I call wilwood and spoke to one of the techs and he gave me all the part numbers I needed for the front disk brake kit. So I went down to Jegs and picked up the kit he recommended. Got all the brakes on the front off and went to install the wilwood kit and it wouldnt fit. So I called wilwood and he told me to send pics and he still had no answer for me about why they don't fit. Posted on here and with in minutes I had my answer, wilwood had the 71 scamp listed as a B body. I called wilwood back and they argued for a little bit until someone there informed the tech that the 71 scamp was indeed a A body. So wilwood sent out the proper brackets for the A body and said the calipers where the same so just reuse them. Got it installed and was having issues with proper pedal pressure. So I called wilwood again to see which master cylinder they recommended, the tech told me to get a 1" master cylinder, so went back to Jegs and picked up the tandem 1" master cylinder with proportioning valve kit. Got it installed and still the pedal was soft and squishy. So I ordered the rear disk brake kit thinking maybe the rear drums were the issue. Got the rear kit installed and same result poor braking and soft pedal. Called wilwood again and the tech said my master cylinder was to big and wasn't building enough pressure. So I had to drop another $350 for a 7/8" m/c. Right away I could tell it was building better pressure but the pedal was still soft. So I bleed and bleed and bleed, I reverse bleed, used a vacuum bleeder, gravity bleed, and manually bleed them with no luck. So I capped off the main circuit on the m/c so I was only powering the rear brakes and the pedal was solid. Capped off the secondary circuit on the m/c so only the fronts were powered and soft pedal. So I figured one of the front lines are bad even though I see no leaks. I ended up capping of the backs and one of the front and the pedal was still soft, capped off the other front and the pedal was still soft. So back to tech support at wilwood and this time the guys said that my m/c was to small and I need to put a pressure gauge on the system to see what the pressure is, I should be doing that tomorrow. But I called wilwood again today and a different guy suggested a 15/16 m/c so I figure wilwood techs have no clue on what they are talking about so here I am on the forums hoping someone has a suggestion for me.