Brian,

would you say the article in my first post has wrong information?

There it is said, that the supercharger spins 3,3 times faster than the crank? This would mean that with the stock pulleys the supercharger spins already 20.526 RPM at redline 6.220 RPM ? This would mean there is no safety zone if you run a tuning pulley at redline ?

The SL55 supercharger runs over 23.000 RPM at redline. Maybe the smaller V6 supercharger can also handle higher RPM than 20.700 RPM
I hope so, because I'm also planning to put a larger pulley on my car.

Bruno