Cortina differential ID

[Lyle Rundhaug <lrichard@ticon.net>]

More puzzles with the '68 Cortina GT. The rear axle-diff. are not
original to the car - so I'm having a difficult time identifying  it's
origin... seems it's going to be handy information if I'm going to get
any cooperation from the parts guys. Can anyone help me with some
information or a place to contact? The only markings I have found so far
are on the diff. carrier (cast - not alum.) 105E4025 and 8E14.
I would greatly appreciate some suggestions.

Lyle
'68 Cortina GT
'85 Mondiale FF