You will find that spinning past 8k starts to get pointless as you can't get into gears and spit power steering belt - unless you've got an auto or a sequential.
But yeah, I've spun mine to 9k rpm just to hear what it sounds like, and each time it kisses the limiter at 9.2k it shoots off a powersteering belt
Yet to go on the dyno, but with timing figures at 10, 10, 10, 10, 10, 11, 11, 12, 12, 13, 13 it's more than safe.