If you´re talking about the exhaust header...the one of a 1st gen 1.9l HO Escort GT.
It actually has better flow and a better layout than ANY of the aftermarket header for the CVH/SPI engines....plus they are pretty chaep to get at the wreckers.
Don´t bother even really thing about the Pacesetter header...it doesn´t fit very nicely...plus the flow pattern is all wrong for our engines (make less horsepower than stock!!!!)
You will also have to re-located you cat further down the exhaust pipe for any of the headers to work.
But besides that...the 1.9l HO header off a 88.5 or later EGT will work the best