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These cat backs look almost identical. Which is louder the dynatech muffler or the magnapacks from the silver bullet? Which is note is deeper? The dynatech system is a little cheaper so if they're pretty much the same I think I'll go that route. Anybody on here heard both systems in person?

Is anybody running Moroso spiral flow mufflers on their trucks? I can't find a sound clip anywhere. How do they compare to magnapacks? Are they louder or quieter than magnapacks? Do they have a deep rumble or are they really raspy? I like they way they sound on other vehicles but I have never...