Proper Spark Plugs for a late TD (1953)

[Bill Schooler <schooler@erols.com>]

Can anyone tell me whether Autolite copper core 64 resistor plugs are
correct for a late TD?  And what is the proper Champion plug, now that
they've changed nomenclature?  (Yes, I know, this was just mentioned on
this forum, but I was too quick with the DEL key.  Or should I call it
the Zappa key?)

-- 
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