no spark

ok folks update
i bought a new coil from autozone and i thought i was getting a spark but it seems the longer i work on this i lose spark. did i go wrong with just getting a stock coil when i am running a moar performance distributor and a msd 6al ?
now it seems that when i unplug the coil wire and ground it then turn the key on and trip the starter relay i only get 1 strong spark . hit the relay again and 1 strong spark, every time just one strong spark then nothing. i actually started the car by just turning the engine over for a split second for the quick spark but that isn't right.
help
terry