plug recommendations?

AJ/FormS said
or RN14YCs; non coppers but they don't last as long.
I have coppers in my 367HO. They've been in there since 1999,lol. They have quite a bit more than 100,000 MILES on them. The haven't been out since 2004 or 2005.

Yeah you can use the N series but it has the 13/16 hex. I just like the 5/8 hex better, but they are the same plug otherwise.