Suggestions on which plugs to go with

Bewy said

Turk,
I always have better luck the first time, not next time. There was never any spark plugs in the 70s that had 0.040"or 0.060" diam centre electrodes, the size used for Irid plugs.

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Ok Bewy, tell me what is a C63 Champion?

Been that way since at least the early 1979’s because I was using them.

Later today I’ll post a full list of all the fine wire plugs Champion made and some are still made.

Wrong again.