its ef.. uni joints are good..

im thinkin it might bear gearbox/torque convertor or sumthing.. cause im not 100% sure but i think the vibration only come after i got a second hand g/box put in it as it was stuffed.. so im not sure..

check ur tranny fluid the eb done it to me a while ago noticed there was the same noise you are descrideing and i topped it up and the noise went away