Can I use NGK TR6's on an N/A motor?

[BlackBadGT]

This summer I purchased a set of NGK TR6's with the intention of spraying. I never got around to the nitrous, so I never switched the plugs. Well, my car isn't running very well, so I'm going to try the plugs. Can I use these plugs to run N/A? What should I gap them at?

TIA
-Jason

 

[Mustang92]

You can use them but they sure won't be optimal, you need Tr-55's. Gap should be the same as stock.

Bill