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... or maybe sacriledge?
Anyhow I just put a set of "traditional Champions (RNY9C) in the Regina 940, after I asked Tom at http://www.pbase.com/stealthfti what he uses in all his engines. If you check his site, his engine stuff is accessed in the lower part of the window.
There was a very noticeable improvement (less "gas pedal" pressure needed), which any new plugs would have give, no doubt. But I thought I'd give them a try, figuring after 60/70 years they might know what they're doing. (Of course these were made in Mexico.)
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Bruce Young '93 940-NA (current), 240s (one V8), 140s, 122s, since '63.
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