I worked at Chrysler Engineering at the time these dampers were added to the cars. There was even dampers inside the steering wheel on some cars, as well as under the dash. The damper on the trans is a Power plant bending damper (PPD). The car will as a rule get a little noiser as not all cars needed them. Some cars just didn't have the problem, but most did. The heavy damper on the floor pan is called a Boom Damper. Of course it stops the floor pan from booming. Take them off if the noise doesn't bother you.