This Porsche 911 S is part of a collection we maintain. The car has been driven around Europe and competed in several historic rally events. Although the air-cooled engine ran without any major issue, we assumed it was lacking some power. We overhauled the entire engine and rebuilt it in the best possible way. On the dyno it got a final tune. Now this 2 liter opposite boxer runs better than ever before. Time to stretch its legs.