I'll try and dig up the threads on the Vortex for ya. From what I remember, fronts are "simple" for a fitter/welder as it's a change in bracket, but rears are more difficult.
Fronts: http://forums.vwvortex.com/zerothread?id=3195980
Rear: http://forums.vwvortex.com/zerothread?id=3826867
There are pics/diagrams in both.
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