Pickles wrote:

Would that not be from the rear axle flanges?
I've had the clunk between gears from new, I've had the input shaft replaced (when it failed!), but the clunk is still there,..A frame ball joint could be an issue too?
Pickles.

on the subject of rear flanges. I replaced both of mine with the new rear diff, g.box and t.box and circa 5k miles later the one rear flange was well shagged / worn and hence replaced again while replacing rear wheel bearings.

why would one wear THAT quickly?