I am putting a 5.4 2v in my mustang. It is out of a "99 navigator. I took the PI heads of of my 4.6. I am working on porting and polishing them, I already polished the valves. The motor is a non PI 5.4, so i am doing the PI swap on the 5.4. then opening my heads, anybody else building anything, post it up and let everyone know.