The SOHC/4 World Tour is in under way.
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Dunno, sounds like you would have to have a pretty sizeable power source to properly power them.
After working a Honda parts counter, I can say that I've seen "the latest and greatest" in spark plugs before, and nothing seems to work better the the stock NGK plugs.
Huge. Champions are only good in Triumphs and lawnmowers.