Hi Pat,
Don't forget to consider a Subaru transplant...hundreds of Vanagons
have been converted to Subaru power.  Subaru engines are the closest
to the factory engine form factor (flat 4, water boxer design),
although a much improved design IMHO.....and unlike a diesel, almost
no vibration and noise  (most Vanaru owners have to look at the tach
at stoplights to see if the engine is running).

Is there anyone in Seattle area with a Subaru powered van who can
offer Pat a thrill ride?

General Subaru engine information (white paper) here:
http://www.surrealmirage.com/subaru/files/SAE_boxer.pdf

Tons of information is available here:
http://groups.yahoo.com/group/subaruvanagon/

Small Car in Tacoma installs turn-key Subaru's
http://www.smallcar.com/convert.htm

You can also get a turn-key system shipped on a pallet to your
regular mechanic (or DIY) from
http://www.vanaru.com/

I'm obviously biased towards Subaru, but look and drive at as many
conversion options before getting out your wallet...$7-$10k is lot of
money.

-Paul

>The other alternative I'm thinking about is the Bostig Zetec
>conversion. I looked over their web
>site and forum, and I talked to Jim at Bostig, and it sounds like a
>nice product. Cost about the
>same as the diesel, it seems. Before making my decision I'd really
>love to see one of these
>conversions and talk to the owner.