I posted this a few weeks ago but I actually want to confirm that this wrench will fit on a DII's viscous fan nut. Just barely but it is a nice beefy wrench compared to the sheet metal stamped ford wrench, cheaper too.

http://www.northerntool.com/webapp/w...2595_200322595

I actually was able to put the wrench on the nut (after I sprayed with PB blaster overnight and ran engine to temp.) and hit it with a bat and loosen the nut without holding the pump with a strap wrench or anything.