I was getting a ton of noise and vibration so i rebuilt my rear differential and while that problem went away I still hear a noise. It's coming from the middle/front of the car, hard to place where it is. But it sounds like a grinding/howling sound sort of, hard to explain. Seems to be louder while accelerating. You think it's the front diff or the transfer case chain? can the transfer case even be rebuilt? If it can I may do the front diff first and then transfer case chain.