spark plug mismatch

[Dope 97GT]

I bought a set of ngk tr55IXs a while back and went to install them today and one of them was broke. I cannot return them because it was soooo long ago.

Will it hurt to run one autolite copper plug gapped the same? It will not be for long because my supercharger is coming soon but my car is running very poor and i think it is the plugs and wires and i cannot resell them anyway.

 

[RoadconeTuning]

youll be fine as long as they are the same heatrange... or you could just go and buy one plug.

 

[Dope 97GT]

thats what i did i just bought one autolite because the ngks are not in stock.