Hi and welcome to the forums. I presume the 3.0 V6 is the same as the one in the Laguna. If so, there is a K&N induction kit available:
In terms of fitting - that's another matter. Maybe somebody can help you out. I presume there's a reasonable amount of space under the bonnet - it's a pretty big car. This is the fitting instructions for the Laguna:
Looks pretty complex to me! This particular kit involves a cold air feed which uses a scoop mounted under the front spoiler!