Engine cuts out around 3k

[SmokinStangGT]

could there be any way that the incorrect gapping on the spark plugs be doing this????? I pulled them and the gap was at .036 and mustangs call for .054 gap... now i regapped them and they are about .055 or so and it runs better but it still sucks and the plugs at the ends were only burning around the tip and the top was not burning at all... What could this be from and could this be doing anything?? also the plugs smelled of a strong gas oder and they looked like they could need to be replaced even tho they only have 8 miles on them?! could any of this be from the coil going bad or maybe any sensors?? I cleaned all of the sensors out and i cleaned the tin pin connectors, TFI cable and the spout plug.... Also could this be vaccum related because all of the hoses are stock? please help i need stuff that i could check for and if anyone has any experances with this please tell!!! -THANKS