Remove the front driveshaft. Does it still do it? If yes, then check your CV axle shafts. If no, then it's most likely the driveshaft, either the rezeppa joint(s) or ujoints, depending on what type of driveshaft it is. If it is the rezeppa type, is the boot on the t-case side rippped open? You'll usually hear a fairly loud humming if it is that joint as well.
The beatings will continue until attitudes improve!
HID Quad bi-xenon + foglight retrofit