In my experiences with my own cars over the years, I've always found it best just to stick with the OEM style plugs that came in the vehicle. The engineers use them for a reason.

 

Well sometimes e mail and texts can be taken the wrong way, that's on me. Thank you for clarifying and your kind response. I am older and have older vehicles, never dealt much with Irridium plugs. Just needed info that you answered. Again, thank you!

 

I wouldn't use those plugs.

 

I appreciate your advice, probably won't. Will stick to regular copper core.
thank you.