I know this may sound a bit bonkers but I was just on elsawin looking how to change the bushes on the rear suspension. I noticed that there is an aluminium subframe. This is fitted to the rs6. In the aim of saving some weight and possibly improving my economy a little is it possible to swap my allroad one for the aluminium version. What are the differences between them besides the obvious. Different camber and or mount positions for the shocks self levelling etc. Any advice is welcome


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