This is where I obtained my headers, you will have to import them but this is no problem as MSDS will ship them to you.
http://www.msdsinc.com/ho810.html
But once you have a set of these you will need a new exhaust system then you will really notice the difference..
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Owning a Cougar is like owning a Super Model
Good to own but "High Maintenance"
2000 Model Eibach Cougar (Auto) - Now dead & buried