Depends on how lucky you are.... You'll need (right off the top of my head):

Engine (complete) - My 1.9 NA long block cost about $3200 delivered seven or
eight years ago
(Overlandparts.com - p/n 028 100 018K)
Injection pump, injectors & lines
Carrier bars (if 50 deg install)
Motor mounts (if 50 deg install)
Oil pan & pump (if 50 deg install)
Either a diesel bell housing or a Kennedy adapter

Cheapest way to acquire the pieces might be to find a rusted out Minnesota
diesel Vanagon and buy it.

If 'lucky' & you're the chief mechanic, maybe $6k. If unlucky (and/or have
to hire it done) the sky's the limit. I've seen bills in excess of $20k.

Ball park enough for you?  Google can be your friend here. There's lots of
info on them Internet tubes....

Jim

-----Original Message-----
From: Rob
Sent: Thursday, May 02, 2013 10:26 AM
To: vanagon@GERRY.VANAGON.COM
Subject: Re: [VANAGON] Sucky Gas Mileage

What would a diesel conversion cost?  (A ball park est?)
Just curious....

Rob
vwrobb@gmail.com