Well if your trying to figure out what to do. With my V6 I have full magnaflow exhaust from Y pipe back with 2.5" piping.
Finished off like this:
I can't beleive you would want to put a dual exhaust on a Zetec.
Wouldn't the pipe size have to be 1.25" from the Y split to the tips out the rear? If the stock is 1.75" single.
