See my earlier post in this thread. Just installed a pair of motor mounts made by Corteco ($80 each plus shipping from Autohaus Arizona) - PN 1617324. Local Volvo dealer wanted $127 with tax each for the equivalent mounts. Vibration at idle in D and R is gone, and noise level while driving is practically nonexistent. Best upgrade ever.

The mounts I replaced were the "hydraulic" ones from fcpgroton for $35 that did raise the engine off the crossmember but allowed much annoying vibration in the cabin when idling in D. The Corteco mounts were a little harder to install since they are about 1/4 inch taller than the others - had to raise the engine higher in order to mount the base on the studs. But well worth it.