nevermind, after a bit of sleuthing, I figured it out:
cross references to a vanagon, because why wouldn't it?
Anyone have a p/n on the b3 rear mid brake lines? (the ones that go from the axle beam to the body).
appears these things are made of unobtanium, unless mk3 golf/jetta ones will suffice.
the hacked russian online etka is down these days, it appears, so I'm having a hell of a time coming up with this part number.