The heat issue is something to be aware of, but let me add this.
The guy that posted this was using a big MSD Blaster coil and no ballast. He didn't have a spark plug on the coil wire and was letting it arc about two inches from a coil wire to its ground. He reported that the module was getting very hot.
I used a stock Chevy coil, a ballast resistor and a .035" plug gap. My module wasn't warm after spinning the dist for maybe 2-3 minutes.
