Like Tone says, the hard part is in getting those screws off without stripping the heads. I like to have some of the screws as back-ups, along with an easy out just-in-case. The Isuzu and Napa part numbers in that article are no longer valid. You can buy the Ford hub tool at Advance Auto Parts for $9.98 and grind off two nubs, plus slightly modifying the two remaining numbs as indicated. The correct part number is T72048 Ampro 4WD 4-Prong Locknut Socket:
http://www.partsamerica.com/ProductD...tnumber=T72048
The screw sizes are: "Machine screw flat - Phillips 4mm x 8mm" and can be found at Home Depot
-- John
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