No Spark, but have power to the coil?

Im wondering if this is whats up? This was taken from that page!

"Dan Stern also pointed out that you will need a standalone, late-model, spool-type coil, either GM or Mopar, or an MSD Blaster, which fits the stock can-type coil bracket. Otherwise the coil will have a short life."

I am not sure yet, but I think I have the correct type of coil, I have been running an Accel Chrome can and then all the others were late 60's to mid 70's coils. Im assuming that is what is being referenced as a "spool type" coil.