Yes I have also done some measurements and calculations for the rear roll centre. With the 6 degree beam and my current ride height it can to approximately 3.8 cm. The calculations also show the rear camber and toe for a given bump/droop of the wheel.





With a normal beam the roll centre would be roughly 3 times higher. The reason for that is that a normal beam has a sweep angle of 18 degrees, which is 3 times more than the 6 degree beam. Raising the rear roll centre could in theory be done by moving the inner pivot point of the arms up, but in practice there is no room so you would have to cut a hole in the floor. Besides, I'm not sure if there would be any benefit from raising the rear roll centre.