Not quite ready to concede defeat, but before I pull the tires and what-not I wanted to confirm what I already suspect.

The rotors for the 2000 Ranger 2wd (not the 4wd) should have the hub assembly as part of the rotor?

I'm looking at the new ones I have and they're just rotors. They only have holes for the tire mount studs, no hub, no bearings, just the rotors.

 

Pretty sure that the front rotors on a 2000 2wd is integrated and should have the lug nut studs with it. 4WD vehicles have just with rotor with no studs.

 

Yes I think you goofed, I just did wheel bearings on our '04 2wd and as far as I can tell the front hub and rotor are 1 piece.

 

That sucks.

I could chalk it up to the seller's confusing images for the rotor, but in the end it was my mistake for not doing my homework.

Fortunately it's a simple problem to correct - just trade them out for the right ones.