Ouch! When dealing with crankcase oil it's always better to be a little low than a little over. Too much and you can blow out all sorts of stuff from the excessive pressures. Drain the excess out immediately and don't run it until you do, then get it checked to asess the damage. This is one of the oldest tenets in reciprocating engine maintenance, so take note! ;oog;

As the 3.5L is a pretty tough block I've got my fingers crossed there is little to no damage and that you ran it only briefly. Let us know how it turns out!