bbp axle help!?

Ok so I looked at these axles. The wheel flange is 6 inches and the center hub is about 2 13/16. The axle offset is 2 1/8. Does this soumd like b body brakes? I cant find the specs on the b body axles. I know the difference in offset for the bigger brakes but this seems to be right inbetween. A body should be 2.25 and b body 2.5 wtf?