Bearing race part # for 73 up rotor to 70-72 spindle

I am pretty sure that there is a race for installing big bearing rotors on to the small bearing spindles..Anyone have a part number for it?

A,B or E body??

Unfortunately, that bearing doesn't exist.

I sell 4130 cr-mo adapters and conversion seals for that application, however.

E-mail me if you are interested.