Have a play around with Vortech’s impeller calculator. You’ll find that it’s actually quite tricky to get close to the impeller limit: https://vortechsuperchargers.com/pages/impeller-speed-calculator
32/28, ATIdamper, 2.87” pulley, 7200Redline = 52,380rpm
928 state that it should be fine to overspin blower by a few thousand rpm.