You can purchase the filters here on Amazon much cheaper Here-
http://www.amazon.com/gp/product/B004...
Motorcraft Part Numbers
Fuel Filter Kit- FD-4615

EDIT: WHEN DOING THE PRIMARY FUEL FILTER LOOSEN THE HOUSING 3 TURNS THEN OPEN BOWL DRAIN. Thanks!

A bit different from the normal on the 6.0l and 6.4l but just watch. It really is this easy!