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· Lovbyts
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4,510 Posts
I used the +4s for about a year and they were all right but after using everything out there I have to say stick with the stock plugs. The +4s wore ok but you could see where they had gotten hot. I know they aren't cheap but our cars are extremely picky when it comes to plugs. I have an extra set of stock plugs. I have a set of New never used NGK PFR6J 11. I have two stealth's and order more than I needed and am not going to need these for some time. I will let them go for $9.50 each no tax or shipping. I will even supply the sales receipt I got with them. I just got them a couple of week ago and paid more than that + shipping. Let me know if you want them, I have
 
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