Disc brake bearing race?

Back around 2005 I bought a set of adaptors to put disc brakes on 37-48 ford spindles. The guy told me he used Aspen-Volare rotors on the ford spindles just by using different inner bearing races. Of course I dont remember exactly what I need. Can anybody help me with this? I bought these here on the HAMB. Thanks in advance,NYfatboy

 

Heres a copy of the timken bearing specs. You should be able to find what you need in there.

 

A-17, Set 17, with matching seal to bearing application, stock to a Volare application.