try www.car-part.com it's the network that the salvage yards use, 
there are aa few vanagon diesels in there.. 

I'd rather they were stripped and bought then scrapped and squashed. 

Date:    Thu, 5 Feb 2004 00:09:50 -0500
From:    John Runberg <jrunberg@MAC.COM>
Subject: source for diesel flywheel

where can I get a new or good-used diesel flywheel? Are they all 228mm? I need one for my upcoming engine conversion.

john