Originally Posted by
Richy
All '73 heads have the same size valves for T , E and S , but the port sizes are different , so if not already done have the ports enlarged to match the intake manifolds . I really like the 2.0S engine , but it was anemic below 5000 RPM so the 2.2
is a good upgrade , but you loose the 2.0 S personality . The 2.0S production engine was the closet engine Porsche built to the race engines , but people don't like them because there's no low end .