Loud Humming coming from passenger side!, E-153 tranny- Carrier bearing? Options

[eggman40]

When im driving, i hear a loud humming sound coming from the engine bay. I could feel the vibration inside the car as the humming gets louder. It gets louder the faster i drive, so... My guess at first was the wheel bearing, but i lifted the car and wiggled the whee back and forth at 12 and 6 o clock, and there was no play. Sooo my next guess is the Carrier Bearing on the passenger side inner-axel? if a bearing is worn, would it make that humming noise? If it is, is it hard to replace? A little help would be nice, cause the sound is driving me nuts. Thanks guys!