Originally Posted by
c100driver
The main issue would be to find a tail that has similar weight specification to be able to operate the sector. The Air NZ B767-300 has a much higher TOW than the QF B767-300 which can be a huge limitation on available range. While I am not familiar with the A330 I am sure that the TOW would be the same differences between tails/fleets. No point paying for a TOW weight you don't need.
What MTOW does Air NZ have? Most of QF's were 185T.