When I puchased my 6.9 four years ago I was less than impressed by it's handling and an initial job was to replace a pair of stuffed rear strut ball joints.
These were replaced using Styria's exchange ball joints and they have held up quite well
At the time I replaced these I was more than surprised to find a near 1 cm gap between the bottom of the rear mounts when viewed behind the back seat.
There was clear air visible betwen the bottom of the mounts in the cabin on both sides.
At...