For the people wondering about the Zakspeed Capri rear suspension setup and why you can adjust toe:
http://www.speedhunters.com/2013/02/fire-breathing-neck-snapping-the-ultimate-capri/The rigid live rear axle was made from a light alloy, though the material went through some iterations to find something that could withstand the power, and the housing was set up with positive camber and tie bars to control toe. The rear shocks used the same set-up as at the front.