5.0 Spark Plugs
#1
#7
They've been the best running plugs for me, both with the N20 and without. The Motorcraft always seemed to cause my preignition (pinging) problem to increase, and seem to be less quality plugs than the NGK's. Aside from my own experiences, my neighbor who has a 70's Camaro Dragster with a 477 big block runs NGK's and swears by them.
#8
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