I would be interested. A few years ago I changed the spark plug wires on my '54 (supercharger is not installed) to the original solid types sold through the Bulletin, and ever since then, the temperature gauge on the dash reads 1/4 higher than it ever did. It used to hover about the halfway mark, now it's always 3/4 or so. It never overheats or boil over. I thought perhaps the car had hotter plugs with the old wires, and once I changed the wires, now it runs too hot!