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Just back from NAPA and could find none of the plugs I’ve seen listed or cross referenced.Suggestions?
I believe Champion D6 is the replacement for the old R7 plug.
http://www.holden.co.uk/displayproduct. … de=030.592
Yes, it is a Champion D 6
Use the AB-7 NGK plugs or the 509 (old D-9) Champions—but my preference are the NGK’s