Hafthor, I applaud your use of the English language and with no disrespect intended, the words "are" and "is" are called linking verbs. In your last sentence, the correct linking verb should be "IS" not "ARE"
But again, you're far better at using a foreign language than I could ever be.
Regardless of the language, lowering a swing axle is relatively easy but, you'll end up with a huge amount of negative camber. The torsion bars regulate the height of the suspension. Torsion bars have 40 splines on the inside and 44 on the outside. So moving the outside 1 spline will usually accomplish what you are seeking.
REad this, it will help: http://www.mydune-buggy.com/home/dl_files/reartorsionsetup.pdf
Since the wheel is rigid with the axle tube, anytime you lower the car, this will make the transaxle sit lower and when that happens the axle tube will sit higher thus, the wheel will naturally tip in at the top.