they did make a different 10.25 in the cab/chassis dual wheel axles. they are same distance rim face to rim face as a single wheel 10.25 but have the big brakes and a narrow spring stance> won't bolt into your Centurion's chassis
you'll need to take a spring stance measurement centre pin to centre pin. that will tell you which diff you are working with.
I tossed a wide dually 10.25 on the scrap pile and sold a cab/chassis 10.25 for $100 because it was more than scrap price.
they aren't worth ***** here. too many rotted out old trucks with not many miles on them.