5.0 to 4.6 swap(can it be done)?

for those of you who don't know why one would go to 4.6 from a 5.0 is this,
4.6 (DOHC) engines are more efficient, stronger (6 bolt main block) and also they are aluminum blocks (except for the 03 :bang: ). The modular engine can go higher in the rpms, has less HP loss due to less friction, etc. There are so many reasons, so I would ask, why would you NOT go to a 4.6 if you could :nice:

or, you could always put 4v heads on a 5.0, for only $3000 :nonono: :rolleyes: :notnice: :(