TR-6 Universal Joints

[MD.FEED@nwh.org]

      I just bought some universal joints from The Roadster Factory. They 
supply a brand
labeled GMB made in Japan. They look and feel worthy of their  Japanese maker, 
they even
have a grease nipple. Does anyone know what brands might be offered by MOSS, 
Victoria
British, or Rimmers? Would autopart stores offer other brands?
                 
                                    Thank-you
                                    Dennis(Massachusetts)