It works.

You need to make a decision- early E21 or late. The 2 don't cross.

If you go early, you need the early E21 stubs and diff, and you can use
the 2002 cv shafts, as they're the same length.

If you go late, you have to use all 80- 83 parts, as the cv's tuck inside
the redesigned hubs and stubs.

Perversely, the later stuff is both bigger and lighter- so I went that route.
Whether it's much stronger, I dunno.

That's the short version...

t
_________________
I have a car disease. There is no cure.
I'm not even managing the symptoms very well...