The Nissan Path

hey guys. 95 4x4, lots of improvements, but recently a very pronounced vibration is coming from the engine, esp at low rpms. new maf, o2 sensor, new plugs, etc, wondering what the next step would be? motor mounts? she has 200,600 miles. vg30e. everyone says there is no reason not to get 300k/mi out of her. could it be a camshaft sensor? thanks for your thoughts.

Just one thing to check is harmonic balancer, they have been known to come loose or shear woodruff key way. Not saying that is what it is but can be a cause of vibration.