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1983 911SC Exhaust System

Engine

Vehicle Information: Model: 911 SC; Year: 1983; Body Type: Convertible; Total Mileage: 182,000;

I read your recommendation for the SSI system for reasonable HP gains byunrestricting exhaust flow. Do you have an opinion as to the advantagesof replacing the stock muffler to a GHL, for example, or any other brand?Would you say the SSI's alone provide the significant HP gains and addinga muffler may not be worth the extra money for a few extra HP?

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