Id guess that sooner or later you will see blower drives with overrunning clutches to prevent the blower destruction. Not sure , but I believe the head units have a 4:1 or greater output shaft speed. Imagine what is happening in the gear case when on the two step or pedaling. The blower output has to react at at least a 4:1 ratio.

No question Pro Chargers, make power, but are susceptible to breakable. I was under the impression that a lot of the big hitters have minimum of 3 Pro Chargers, one on the car, one as a spare & one being repaired … As for how true, I don’t know 😋