Go with bosche cap and rotor too.  I might think about replacing the fuel
filter if the van has a little over 100k miles.  Also the oxygen sensor is
good for 50k miles or so (a little less for the one wire and a little more for
the three wire).  If this has never been changed then it is a good candidate
while you're at it.  Also you could check your tranny oil and see if it still
looks good or should be drained and replaced.  What about the coolant?  Have
you flushed your coolant system lately (like in the past two years)?  If not
its about that time too.  You can check the plug wires with an ohm meter and
the Bentley manual.  I wouldn't replace them unless they are bad (they cost a
bundle and usually hold up quite well).  Check the water pump pulley for play
or loosness, and examine your belts too.  Check ground connections for
security of attachment and corrosion.  That's all I can think of.  Have fun.
Ken Wilford
John 3:16