Update; I have been using a coil that I had around and don't know where it came from, or if it is good, until I get a replacement. It has been working fine, and I have checked it for getting hot just in case. The engine ran very little today, and coil was heat checked several times. It was barley warm and never hot. When I took it out to put in the replacement Ford coil (made in China) I could see the emergency coil had been leaking oil out one of the terminal posts; I believe the dist. post. I do not believe this was caused by the Mustang electrical system components. The replacement, that I had just chased down twenty miles to get because UPS would not let the driver leave without a signature, and paid to get here over night, turned out to be one that had been used before. It was repainted over scratches on the bottom with gloss black when the coil is flat black, and, in addition, it looked like the factory glue that seals the top on had, at one time ,run down the sides. It still did not look sealed as there were holes in the seam. I believe that it is bad, and the first buyer doctored in up, sent it back because it didn't work, and nobody checked. The sad part is that no one checked the shipment before it went out to me either. What the hell has happened to people?? What the hell is wrong with the businesses that are fortunate enough to still be in business? Sorry about the rant. Who else would care but a gang that still believes in quality and craftsmanship?