Help Junkyard coil for HEI distributor?

So got the new coil in...same problem. No spark. It seems the old coil wasn't the problem, or at least wasn't the only problem. To test the old coil I hooked up a spark plug to the coil, grounded the coil and then grounded the negative wire coming from the coil and there was no spark to the plug.
So after buying a new coil and seeing the same result I went ahead and bought a new GM hei ign module. Hooked it up and same problem. No spark. My original module had 4 pins all in line with each other, where the gm module has 2 pins on each side. Are all hei module interchangeable if they have the same number of pins? Also the physical size of the modules was sligihtly different, so I'm not sure it was properly grounded when I tested it.
So my next move is going to be picking up a new multi meter and testing the pick up coil to see if it's good. This is a Chinese hei knockoff dist I believe, any idea on what reading to expect? If the coil pickup checks out I will be reinstalling the module with a ground wire attached and see if there's any difference. If anyone has any other advice they feel like passing on, it's more than welcome. I am so close to driving my Dart but so far...