[trials935]

See if you can eliminate brakes/ pads shifting/ sticking in the calipers by coming to a stop using only the handbrake, not the brake pedal and taking off again to try and make the clunk happen. Also, you can put a piece of thick rubber between the sway bar and Trans to temporarily eliminate that. If necessary, I would dremel a bit off the aluminum Trans rib rather than any off the sway bar, which will just create a weak spot on the bar and might fracture there in the future. Are you positive that the 2 large bolts that attach the trailing arms to the torque tube are very tight and the mono balls are not shifting in the mounting tabs.