I'd be curious to know what the (observable) differences are...power comes on more like an E vs S cam? I'm stroking a 2.2 to a 2.4 using 2.2 S P and Cs
Here are some dyno Comparisions on some early engines I built.
https://forums.pelicanparts.com/porsche-911-technical-forum/1151593-dyno-summary-testing-early-2-4l-2-5l.html
john