04 navigator clip

hi there i own a '03 f-150 and im planning on putting the '04 navigator front clip but  im not sure if it will bolt on or if i have to do a lot of modifications, once i saw a feature in this magazine where some guy put the '04 expedition front end on a truck like mine and assuming that the navigator and the expedition are about the same truck just with diferent trimi think it might work, i would appretiate any help  

Here's the story, in case you're interested. Hope this helps.