I just got my PAW catalog Friday!! So the first thing I start to do is thumb through the pages working on my Christmas list. When I turn to the page with a 427 Windsor engine ( a replacement for your 351W as it says in the book). So my mouth starts to drull and I start to have visions of a new 427W in my baby. Next I call a buddy of mine...the guy who painted my Bronco and who is also a true Bronco and Ford fanatic. He pulls out his PAW catalog and turns to the same page and says to me "dude you have to get it." So I was just wondering what yall out there in Broncoland thought about swapping out the 351W for a 427W. The only bad thing is that I wont be able to do it for almost a year and a half cause I leave for Korea in April for a year. So I'll have to do it when I get back