My '26 6-cylinder Pontiac had AC78S plugs. The only new ones I've found so far are something like $95 each

Anybody know if the Autolite 3076 is truly an equivalent?
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Anybody else on this planet campaign a M/T hemi Pontiac for eleven seasons?
... or has built a
record breaking DOHC hemi four cylinder Pontiac?
... or has driven a couple laps of Nuerburgring with Tri-Power Pontiac power?(back in 1967)
... or has a Pontiac born the same year as Jim Wangers? (1926}