lots of intakes out there. is cost a factor(will influence your decision)or looks(also should influence decision) or?????
most all perform roughly the same- don't kid yourself. you likely will not see(or feel) the claimed hp "increases". so get over that- this is after all a mega weight suv, not a sports car!
looks- go with air force 1. the polished stainless is awesome. a little more pricey than others but, if its looks you want.....
price- go on ebay. can find some pretty cheap(look under f150 as well as expedition- same basically)
want to know more??? go to fordtruckworld.com .great guys and gals with ford trucks. search in the forum archieves on intakes....
good luck