On the back of the knuckle is a concave cover with 4 holes in it. My question is what tool or do we need to fabricate one? I'm having a difficult time locating specifics on my vehicle in this area. Thank you in advance.

 

A picture might help. I am not familiar with the 2wd trucks, but if you remove the wheel, brake caliper and rotor it may become evident what you need to do to remove the wheel bearing.

 

If its like other makes, that cover is really the back side of the bearing. When it's all assembled the outer cv shaft connects right up to the bearing flange. Did you mean 4 bolt holes?

If those bearings have been on there since the second Bush administration, my guess is you'll most likely need a press. You may be lucky with an air hammer or sledgehammer in that corner of the states.

Up north I've had the added pleasure of removing the knuckle in addition to the above, so I can take it over to a shop that allowed me to use their press.