Halfway, go ahead with that dual exhaust now. You can use the existing muffler and tailpipe on one side and you'll just have to add the exhaust pipes, one muffler, one tailpipe and the hangers. I had a 64 Lemans (326) and when I converted from single to duals my gas mileage increased 2 mpg, not to mention about a 5 to 10% pickup in hp. Do it now before the existing one rusts onto the muffler and you can't remove it without damaging the muffler.
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Save yo Confederate money, boys, the South is gonna do it again!
Pecosbill
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