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The resonance through the body from dumping exhaust before the rear axle gets annoying and will tire you, even though you might not notice it. Loud is better achieved with bigger diameter pipes and the right mufflers, along with "enough" camshaft. Try Walker 21468 3" diesel truck mufflers. They are straight through, perforated core (louvered cores cost flow), no HP loss, significant noise reduction vs. open headers. Still fairly loud especially when you get on it. I am running 3" exhaust after headers, and 3" Torque Tech tailpipes.
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