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M58’s are the quiet ones but have a good loud sound at full throttle. And the M55’s are loud all of the time. If your serious about buying the M58...
Sorry I don’t
Does he have m55 or m58? It says M58 in his signature. I have both m55 and m58 and I know that I won’t sell my m55’s
He is talking about head gasket not headers gasket.