Ford Aluminum 5.4L Header Swap - All-American Header Test
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Rather than just run one set of headers, we decided to hit the guys at American Racing headers up for three different sizes. In the end, they supplied a set of 1, 1 7/8, and even a set of 2.0-inch headers designed for the 5.4L in the GT500. (The company will not offer the 2.0-inch headers). View Related Article
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