Hello people i have a question, can I put Z32 Rotors into AD22VF stock Calipers???

Also i need to know what is the best big brake upgrade for the rear GTiR Brakes... please help.

for the rear you can do the maxima brake upgrade

You can't do the maxima swap on the rear of a gti-r. Gti-r has a specific rotor all to its self it seems. There is someone making a big brake kit for the rear of a pulsar gti-r on www.gtiroc.com other then that I don't know of any company that does.

As for the front I have no idea if the z32 rotor would fit but you can buy a big brake kit from fastbrakes for it.