Sorry if this is a daft question but I'm a old school mk2 guy not Sierra based at all
About 10 years ago I broke a 2.0 4x4 Sierra 1991 100k on a j reg ( I bought it as it had a YB fitted )
I kept the axle as it seemed to have a LSD fitted showing all the signs like my old escort ones ,
So present day I'm have a sort out and dig the diff out and wip the cover off to find this ?



I'm used to old escort ones where the plant /sun gears are hidden , but this is exposed ? It's thicker on the Crown wheel side which I'm guessing is where the plates are ? So what diff have I got ?
Cheers paul