I don't buy them.
It seems like I looked them up for one car or another and they were $8 or $9 each. A lot more than the ~$2 each for normal plugs.
Ya, $9.50 each on Rock Auto for Motorcraft SP532 and $8.73 for the NGK Ruthenium plugs.
1950 Chevrolet 3100 (Ol' Roy)
1939 Packard Standard Eight Coupe (The Phantom) | 1956 Cadillac Coupe de Ville (The Bismarck) | 1964 Ford Galaxie 500 coupe |1966 Ford Mustang (Little Red) | 1969 Pontiac GTO (The Dishpit) I 1979 Ford F-100 | 1976 Ford F-150 (Big Red) | 1995 Ford F-150 (Newt)
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