Affiliate link for the front engine mount,
This is the front/upper engine mount I used to fix the wicked idle vibration on this Focus. When these mounts collapse, the engine can basically transfer vibration right into the body, and a fresh mount brings the height and isolation back where it should be. If your vibration changes when you lightly jack the engine up, this is the kind of part that usually solves it.
You'll be taken to Amazon to complete your purchase.