stocksy

i just bought a r3, previously i had a highly modded wrx, and need some assistants on skyline mods.. Finally i got sick of the power.. I want to know wat is he stock r33 auto gearbox capable of handling, i was thinknin of havin about 220-240 kw at the wheels... if possible i would love to keep the auto and not go to a manual.. Can someone please shed some light on this matter... and tell me if the gearbox is weak or strong enough for my power figures..