All the good used ignition stuff & belts mentioned above plus a new
spare water pump.

  I did two road trip water pump jobs on road trips, got wise, carried
a spare, and then no trouble.  If I could find a place for a spare 091
transmission I'd take one of those- again, two blown trans on road
trips.

     I've got a Jetta motor now, but I still keep a water pump on
hand- habit I guess, and a used timing belt, also.

   If you are going to be doing big big trips like we do, I'd suggest
using a synthetic oil and extended drain intervals.