The extra weight of a true 3" dual exhaust is one downside. The fitment issues are another. Especially when you can run a 3-1/2 or 4" single setup that will flow plenty for most applications. It seems like it's the lure of a true dual exhaust setup that sucks most people in.
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69 Z28 JL8 4 wheel disc brakes - being restored
09 Silverado Z71
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