In the 90's Jag went to outboard discs and used what amounts to a 4 link set up. It would be feasible to apply this approach to the earlier inboard disc rear and the trailing arms and struts are much less bulky looking than the earlier stuff. The tubes welded between the lower control arms are temporary and used to keep the arms parallel to the floor during set up.
[img]https://s10.postimg.org/w15e1tzz9/jack_s_4_sale_bryans_chassis_019.jpg[/img]
[img]https://s10.postimg.org/5u475gpat/IMG_3973.jpg[/img]

Evan