Got a couple more questions for those with more knowledge on the van than I
have.

There are a lot of exhaust system brackets and supports which attach to the
engine on this van.  Normally I put them all on.  Many of the mechanics who
have worked on the van (including a VW person) usually leave them off.  I
see the reasoning for the brackets (keep the exhaust pipes from flexing
differently from the engine movement) but how many are really needed?  It
looks like most of the brackets actually are to relieve stress (flexing) on
the Y-pipe section of the exhaust system.  Is this correct?

William