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1974 911 External Engine Upgrades

Engine

Vehicle Information: Model: 911; Year: 1974; Body Type: Targa; Total Mileage: 81,000;

I have a 1974 911, 2.7 CIS with 81,000 miles. The engine was rebuilt atapproximately 58,000 miles. Are there any "bolt on" ways to increase thehorsepower of the motor? It currently has SS heat exchangers and a sportmuffler. The intended purpose is primarily street driving withoccasional DE events.

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