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HOW PORSCHE'S BRILLIANT AIR-COOLED FLAT-SIX ENGINE THRIVED FOR THREE DECADES — Petersen Automotive Museum
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Modified 3.6L Porsche Flat-Six Engine for sale on BaT Auctions - closed on November 23, 2018 (Lot #14,291) | Bring a Trailer
Porsche Flat-Six | Hemmings
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Porsche Cayman and Boxster Will Return To a Flat 6, Allowing the 718 Twins to Reach Further Audiences | Torque News
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Under the skin: How Porsche revived flat-six engines for the 718 | Autocar
Porsche 911 Flat-Six Boxer Engine
A 500-HP Air-Cooled Porsche Flat-Six from Singer and Williams | News | Car and Driver
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