The stock pinto was a duraspark set up, the later bronco II had a computer contrôléd feedback carb and dist ,  it was a pain in the butt when you had a problem with it , the fix was to rob the carb and the duraspark off the pinto , the only difference in your 2.8 over the stock pinto 2.8 is the engine block is thicker , cam journal is larger ,spark plugs ,timing cover , water pump , and some the thermostat was on the top and not the side , but will work ,

yes they were very reliable except for the org early 76 to 77 models, a contractor made the ign module with cheep parts to make more money but they started failing , most have been replaced by now , your car came with the duraspark , did you remove it when you put in the 2.8 ?? , I do have some wiring if you need it to set it up right , I converted mine to TBI fuel injection on my 2.8 and used the TFM computer controlled Distribitor , let us know what you have now , later Blaine