Engine mounts

[Michael Murphy <mmurphy@nais.com>]

The Monkey Lad (tm) transmission/diff repair saga (89 100, NF w/087)
just exceeded workday #30 w/the shop mgr calling to say, "...the
transmission/diff are now "perfect, but you've got a bad engine
mount...".  One of their transmission "tests" was power braking and is,
along with mount age, the probable cause of the failure.  So I'm
inquiring:
1. Should mounts be replaced as a pair (they only ordered one); and,
2. Bentely's only mention of mounts (that I've found) indicates
   mounts should be torqued while engine is at idle (Volume 1 10.26 -
   Aligning engine/trans after engine removal).

Any BTDTs', about the mounts that is, not the fact that I should take
the whole crew to Small Claims Court after this is over.
TIA,
MJ Murphy