motor mounts

Dan is "sorta" correct. The Polly mounts are much better. However, and this is just my take, not everyone can afford (or wants to pay) $100 for a set of mounts. Also a few people have said the poly mounts transmit a fair amount of engine vibration into the car (have no first hand experiance with this). The poly mount should last forever, but the "cowpoo" mounts should last many years (I have them on two of my cars with no problem for over 5 years). Cowpoo mounts can be had here.
http://www.motormounts.net/
Use application for 65 Dadge Dart. I would suggest replaceing the trans mount, also.