FWIW, I decided to and will use the stock 273 exhaust manifolds and the complete Charger 273 exhaust system with resonator from Waldrons on my 273/235 motor in my 65 wagon. I’ve read that the factory found this system outperformed a dual exhaust - good enough for me to eliminate the hassles of headers, limited space with other components and I can install this Charger 273 system right here at home
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