Originally Posted by old1030
Different generations. You are talking about the MK2 while everyone else was talking about the MK1. He said '04 in the original post.
I really thought the 04 was a 5cyl as opposed to the Zetec-R. Apparently not.
Then, I'm going to agree with Tom. Why even bother? The Zetec-R was a 212HP motor WITH a snail. An SVT or a base 2.0 Zetec will hold more power for less money.
Just Build your current Zetec out properly. Port and polish, overbore and a good set of forged internals will hold so much more power...