Something to also take note of. When I first looked at the 07 spritner, the 3.5L engine required 91 octane fuel. Well, of course, you cant get 91 octane fuel so you will have to use 93 premium.
I have around 10,000 on my 07 so far ( 3.0 CRD ). Was getting around 20 MPG at first, now...