Thank you all for your replies :)
Originally I was thinking of these:
http://www.whiteline.com.au/product_detail4.php?part_number=KCA412&sq=24716 But didn't know Toyota ones could be sourced for cheap, Twos'R'Us ?
Nik_Lee, i thought smaller diameter would mean more camber for the Toyota ones? and perhaps the whiteline ones are designed differently. I might try contact them to see which would suit best (out of the 12 and 15mm) just to make sure..
Ideally i'd go with whiteline so i can have more camber, -1.5 at most according to their page.
Reddtarga, I went with 225 50 16 RE003 in the end for the rears, and they were too fat..so I've purchased a pair of KU31 in 225 45 16 to match 45 profile on front.
Will just have to try sell off my rears haha :(