Rear Disc Issues - 8 3/4” Rear Disc Conversion Kit

radial run out on a disk is not really important. I see the register is pretty close but your looking for a more centric mount? How about using 2 of the SBP holes as mounts for the rotor on the axle? Use a countersunk screw and tap the axle for the 2, or get a .005 centering bushing. .005 is not alot of meat, almost a piece of wire.
or there are these little guys....nylon inserts!
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