Anyone got a blown H165?

[Bartman]

I've almost finished building an H165 diff head, out of parts I had laying around.
However, I went to fit up the pinion flange, and the nut is gone. To further complicate things, I seem to recall wrecking the nut on the diff that pinion came from.
Does anyone have a blown H165 sitting under the bench, or in the weeds behind their garage that I could have the nut off? (I'd never expect anyone to render a good diff incomplete otherwise)

If you're local, I'll even take the whole diff if it saves you undo-ing the nut yourself.

[85_Z31]

If the Nut is the same as an R200 one I think I have a spare at my Dads Place.