I just had this problem fixed on my 2000 F150 with the 5.4 engine last week. For the last 2 years I have put off fixing it myself and I found a local guy that fixed it for 125 dollars. I bought a new manifold from Rock Auto for a around 75 bucks and some stanless bolts on ebay for about 15 bucks. I got lucky finding somebody to fix it for that cheap and if you look around you may also. My manifold was rusted up bad also.