I'm having a hard time figuring out which VW engines fit in the
Vanagon without moving the deck.

Which Golf engines fit?

Which Audi engines fit?

Will a G60 equipped engine fit (my friend may have a line on one)?

Do any of these reduce clearance?
Will any of these interfere with the Syncro skid plate?

My preference is still the Subaru but the loss of clearance is a big
issue.

Thanks a heap,
...Markus

ps:  If anyone has direct experience with the Subaru conversion, please
contact me.