Ok. Here is the deal... I did some theoretical pictures.
When the suspension is lowered the alignment of the torsionarm and trailingarm gets offset as on picture 1. This would mean that the trailingarms should be angled as stated earlier.
The best option would in my oppinion be to lift/turn the inner TA mount in proportion to the wanted lowering. In other words keeping the inner TA aligned to the torsionarm. (picture 2)
Opinions? Comments?