it really comes down to who is going to port the heads. one option not mentioned is to get your heads ported by Chris Hinson and to then run a cam specced by him. IMO that would be the best way to do it. I am running an XP cam with a set of heads he ported before he was very well known in the 3800 community, and I went with that cam because that is what he recommended would work best with his heads.
Its just porting the runners my dad has a machinest friend who is basically going to match the size of the intake gaskets.
Its free, which is the main reason im having it done.