To tell you the truth id rather rebuild cause I bought that car brand new and i know what it has gone trought. I have baby that motor plus id like to keep the 6 cause that why I bought the car to beggin with. I just wanted to go with the zetec cause I thought it would be a whole lot cheaper to build a race like zetec rather than a duratec, but if the duratec can produce the kind of power that I want with a decent rebuild and mild boost it would be cheaper rather than trying to build a strong zetec to get that kind of power. The thing is that im not trying to get sky high HP like 300+ on the tour more like a reliable 250 at the wheels