ive taken the prop of cant get any play in the joints i put a new centre bearing rubber housing the lot still the vibration checked all the usuall shit bushes /engine mounts/diff mounts/gearbox mount/rear wheel bearings/rebuilt drive shafts/balanced wheels/tyres/ softer exhaust rubbers. the vibration is ever so slight but it there get to ninety its loud. the g box is sweet. im thinking prop or if it was the diff wouldnt it be noisey all the way. the viscous part of the lsd seems very good theres allot of resistance to turn the rear wheels in opposits. theres no rumbling from the diff as far as i can tell to what i would call diff noise but im no diff expert. but this vibration is coming from the back. thanks