2002 Dodge Dakota vibration

First I have no codes on lights that come on. At a speed that starts at 60 mph and goes to 65 mph, I get a vibration that is not a tire or wheel vibration. It is like you wold get if the engine mount was bad. At this time, the sound of the engine also changes. It gets a different deeper sound. If I go to passing gear or go below 60 mph or above 65 mph it goes away. But as soon as I go in that range it comes back. It does not matter if under load or not. At the same time as this started, I started getting a noise when shifting between gears. When still, if I shift between drive and reverse, I get a noise the sounds like a creaking door and lasts a couple seconds. Like it is slowly going to gear. Please help Joe