The lug nuts in the link above is the same as I have on my truck, the truck came with them when I bought it. Here's also another company that carries them:
http://www.ehubcap.com/CWA%20Gallery...s/target3.html
I don't know the size of the hub on an Eaton but I needed the deeper style of the two 90's style caps shown on the yellow wheels to clear the hub on my Dana 60. The newer 2000 something style shown on the grey wheel did also clear the hub on the Dana, I needed to grind down the four tabs on back side to make it fit to the steel wheel.