Interesting for anyone who is working on a fuel injected bus or Vanagon, there is a guy on The Samba reproducing some of the molded vacuum hoses that are NLA. He's making them out of silicone, and you can get the L-shaped hose coming from the oil breather here:

http://www.thesamba.com/vw/classifieds/detail.php?id=1218072

And the Vanagon version here:

http://www.thesamba.com/vw/classifieds/detail.php?id=1218074

He's also got the C-shaped hose that connects to the decel valve that is sometimes hard to find:

http://www.thesamba.com/vw/classifieds/detail.php?id=1220031

He's also got some hose kits and other things for early water-cooled engines:

http://www.thesamba.com/vw/classifieds/search.php?username=GEEBEE

It's not cheap, but considering no one else is reproducing some of these hoses, it can be a bargain if you can't find it anywhere else.