FS - stock 6.0 exhaust manifolds
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The reason why I asked is because while swapping in the 408 I noticed that the stock 5.3 manifolds have a different port shape. The stock 5.3 heads are circular along with the manifolds but the 6.0 heads have a "D" shaped port. I wonder if the 6.0 manifolds are better suited to my new 6.0 heads.
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