the hudraulic lifters are fine to around 8000rpm, if you wanted to push it harder than that you can (as above) Install a conversion kit to solid lifters or change to an RB26 or RB25NEO head as they have solid lifters from factory.
a GT35 will get your power goals on a 3L without having to rev it super hard, (expect real boost around 3500-4000, or for the 2.7 kit, 4000-4500) mine is making almost 400kw well before its 7500rpm rev limit.