I considered doing this to my denali for a LONNNG time, so I did a ton of research. I figured this information would be useless, but here goes:
I think for this to work on an OBS, you'd need to drill the threads out of the wheel bearing, and use 3/4 ton calipers/brackets (if they even bolt on?) It would be a royal pain to bolt on the bearing considering the rotor is pressed into the studs/bearing from behind. I haven't done much research on obs stuff though.
I have gone to a junkyard and measured for the sake of comparison on the NBS stuff, and the rotor offset is extremely close between the dodge rotor/bearing and a NBS rotor/bearing. The issue comes in the dodge rotor being thicker, and 12.5" instead of 12. I THINK with a brake caliper/bracket from an 05+ truck with 13" rotors, it would work. However, as stated on that pirate thread, it's easier to go with a full GM 8 lug knuckle, and have the UCA's machined to fit the correct ball joint. Then you get a MASSIVE brake upgrade as well.
Someone with more time and money than I needs to buy some of this stuff and bolt it together to see what happens.