The 4 cyl family of VW motors is just as tough as the Audi 5's.  The two
engines have their differences but share the same build and design quality.
I have a 1.8 4cyl in a rabbit pickup with intercooled turbo.  10 psi boost
and ~175hp have not hurt this motor.  Truck will not hook up until 3rd gear
under full throttle/boost conditions.
I am thinking the Audi 5 may be the way to go in the van with its extra
mass, but a 2.0 golf motor would still be a huge improvement over the WB.

-----Original Message-----
From: Nathaniel Merrill <nmerrill@PARAMETRIX.COM>
To: vanagon@VANAGON.COM <vanagon@VANAGON.COM>
Date: Wednesday, December 09, 1998 7:10 PM
Subject: Re: 5-cylinder swap update (kits are ready!)

Ok, now we have thoughts on the Audi 5 (thanks Chris).  Who out there has
some quality info (and the time) to tell us about the GTI engine which the
Eurospec swap uses?