I had my van up on the jackstands replacing my right side motor mount. 84
van,  5sp manual with an inline ABA motor using the diesel carrier bars and
mounted just like the standard diesel.

  The mount was really soft, after I got it out I could take it between my
fingers and flex it around with the single bolt while holding it by the
other axis...Some surface looking cracks, too.  So, got that done, hoping to
eliminate an occasional gnarly vibration upon hard acceleration from a stop
when turning left...

  So while I had it up there I addressed my other concern with the
driveline...I was   beginning to hear and feel some 'roughness' from the
driveline...some slight rumbling at steady speed and it just didn't feel
smooth under a load...I tried the circles in a parking lot...nothing
outstanding.
  I had the wheel off and the right side up, left wheel on the ground.
Stuck it in gear and eased the clutch out....."rumble rumble, grrrrr grrrrr
grrrr"  Aha! me thinks.  Found ya.   Went back with the motor off and tried
the wheel hub for rocking...like in wheel bearing...no undue play.  Axle
moves in and out pretty easy.   I had the cv joints apart about a year ago
for re-greasing and the balls were blue and pitted (no comments here)  So I
put the wheel back on and lifted the other one.  Took of the tire for
symetry of test and let the clutch out on that one.....Quiet....er, by far.
  I called Van Cafe, looking to maybe get one of their complete axles...but
they advised that those suck and they aren't going to sell them except in
emergencies.  So, since the boots are ok and the screws were ok last time, I
just got the CV joints only.   Did I do right, ya think?  Yum!  Famous Amos
Cookies soon.

  It is also possible, maybe, that my gnarly  buzzy grindy noise on hard
acceleration from a stop, mainly while turning left, that may have been
caused by the right side CV joints being trashed, rather than that motor
mount?  Anyone wanna comment on that?

  Don Hanson