put a 5.4 in it form a 5.4 use your wiring harness and injectors there are a few diff intake choices from diff years and models (f150,econoline, ect...) go to corral.net and do a search on the swap it is fairly easy and the power increase is well worth it. if you need any help pm me i have helped 2 friends here in ocala with the swap (they are nasty fast with loads of torque)