It looks like a regular 8", 4 cylinder diff from a mini to me. Seems like that's a limited slip but the case isn't quite right to be the Toyota one from a Supra.
'91 Toyota Pickup
'09 Kawasaki KLR650
'12 Gunnar Rockhound 29
"They say the test of literary power is whether a man can write an inscription. I say, 'Can he name a kitten?'" -- Samuel Butler