8-3/4” axle conversion

10x2.5 is the most common, but don't rule out other options, like 11" brakes from C bodies, trucks and vans; 10" units from F/M/J bodies, early 5 lug Dakotas, and Jeep Cherokees, and Grand Cherokees up to late 90's. But whatever you do, get the entire brake assemblies as others have already said. And then write down what you used so you know what to order when service time comes around.