Does anyone know what the connection is going into the top of the valve cover. If you're looking at it, its at the back right side. It is rattling pretty bad on mine. Thanks</span></font>

With a black rubber hose connected to it?, it's the PCV.

If you don't have a hose connected to it, run one that looks like your oil breather from that port over to a nearby port on the intake manifold just after the throttle body.