I have the same "clunk" problem myself. Ive only owned my oct. 81 for about 4 months now and I have not put many miles in it yet, however when I make a turn, say a turn thats a bit quicker than a normal turn, but not too harsh, I hear a clunk somewhere in the BACK of the car....as if maybe the battery was shifting around or something but I'm not sure what it is. Could this be a loose trailing arm? Justin vin 5172