Ordered a new cam today for the W2 408

The cams look fairly similar after you take into consideration lash am I missing something. It should be more stable on top but not much bigger?
Exactly what I was after, just allowing it to rpm out a little higher. I have always liked how the cam pulled through the entire range, pulls like a freight train right until I shift. I just want to allow the engine to run to about 66-6700 rpm without fear of a hydraulic roller lifter issue.