For the MkVIIIfan you need to trim all the way around and flatten the lip to the radiator. As for the radiator, I use a Summit/Northern Radiator, works well, and cost just right. But the taurus fan is a great fan as well.
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Ryan
1990 Mustang GT (In Process)
1993 LX Coupe (Daily Driver, but just choose not to)
2005 Excursion (Big Pig)