Chasing a clunk and vibration?

I have a 2007 Nissan Murano with AWD. When I first accelerate I get a clunk noise. Then when I reach speeds of 55+ mph it starts to vibrate. I have replaced both control arms with ball joints, the driver side CV axel, 4 new tires all balance and aligned. The shop went through everything and that can't pin point... show more I have a 2007 Nissan Murano with AWD. When I first accelerate I get a clunk noise. Then when I reach speeds of 55+ mph it starts to vibrate. I have replaced both control arms with ball joints, the driver side CV axel, 4 new tires all balance and aligned. The shop went through everything and that can't pin point to a part that has failed or is failing that is causing this. I have thought of engine mount, brakes, struts, center support bearing, and the CVT. I was able to visually inspect center support bearing and it is intact, no missing rubber, with a little play. Do you have any ideaa?
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