Cooling System Fitting Removal Help Needed

When i got my car it was about the same condition and i didnt want to break it off. I got a piece of hose that fit inside,put som black tape on the end stuck it in, grabbed some jb weld and used a small washer for the flange. It was a temp solution until i dropped a new motor in the car but my twins,came motor got put on the back burner and ive been driving it for about two years like that.