ring and pinion brand?

[gjz30075]

I'm trying to determine what brand ring and pinion these can be. The ring gear is 35 teeth and
the pinion is 10. However, there are numbers on the ring gear that I don't recognize. They are
39 JG12. Might have to blow up the pic to see it. Also the ring gear looks to be made on the
thin side, to lighten it, I presume.

I don't think these are Ford gears. Does anyone know for sure what brand gears these are?

[gt350hr]

  US Gear and Motive have made a "thin ring gear" 3.50 ratio. Not sure why they changed.

[gjz30075]

Thanks Randy.

[gjz30075]

Got the pic to load.   Thanks

[gt350hr]

   NOT Ford , and the pattern looks a little ugly too.

[gjz30075]

Thanks Randy.   I'm getting some gear whine and trying to narrow it down to transmission or diff.   

[pbf777]

   NOT Ford ,...........

    +1

    Scott.