Thanks for the feedback, fellas!
A little update...
The new engine mounts and diff bushings introduced a lot more NVH. It decreased a little as they settled in, but my door panels, outboard mirrors, and hood buzz, shake, and rattle at idle. The drivers door and good especially.
I was a bit skeptical of their effectiveness, but I bought a pair of GarageStar door bushings. Installation was easy, I filed a *little* off the drivers side bush.
Attachment 18636
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To solve the hood issue, I tried placing a few small-ish squares of the insulation left over from the carpet install under the hood. It worked! I may remove it to make it neater, but I was pretty relieved.
Attachment 18639
The outboard mirrors buzz a little at a certain speed/frequency, I think I have a resolution for those as well.