Slight vibration and noise from drive trian and drifting under acceleration?

Hi fellas, more trouble, any ideas appreciate, had a slight wereing noise coming from drive train somewhere for ages but just recently under acceleration the craplander has started drifting to the right and then left under deceleration, VC seems fine, done the usual tests, do need new rear diff mounts but i wouldn't of though they would cause this problem. Had tracking done recently to and it was fine after that so i think we can count that out. Any thoughs, cheers in advance

Sounds like a part of yee suspension is moving about...check ya bushes and springy things.

Thank you, i will have a check tonight of my springy thingy's and bushes