Truck is a 2006 4 door,4wd short bed with Dmax with 95,000 on it. I am experinencing a fairly loud whinning noise between 30-40 MPH which seems to be coming from the front end. A vibration is also felt above 50mph. I have had the front hubs replaced, the rear tailshaft bearing of the trans. the truck has been run on a rack but the noise does not show up in this manner, Tires have been rotated with no change in the noise. The noise is present whenever the truck is moving with or without the trans engaged or 4wd. Any help or thoughts would be appreciated

Bob