The parts manual has the below numbers as the factory part numbers for all 4WD 5.7L V-8 engine mounts (INSULATOR, Engine MountFront Right/Left). Usually, each of the aftermarket manufacturers has some sort of an interchange catalog, unless you really want OEM, then you're looking at north of $600 for the pair.
55366660AD - Right
55366661AC - Left
Pressing out the inserts is another option and much cheaper, but I have read that is a major hassle to press the new inserts in.
I use MoparPartsGiant to at least figure out if the part is compatible with my truck and I don't have the parts manual handy, they're dead on most of the time.