Reduce dynamic geometry in the rear

[econti]

As we know the E30 has quite dramatic dynamic camber/toe in the rear.
Is there a way to change the location of the arms so the changes aren't as bad?
I know about the Group A subframe/arms but they're unobtainable to mere plebians such as myself.
Or do we just have to deal with it?

-edit-
And what does the degree value of the trailing arm actually measure? Standard as 15 degrees and Group A as 12. Is that the angle as it attaches to the subframe, as in it's 15 or 12 degrees out from being transverse in regards to the body?

[jlevie]

While camber does change somewhat significantly (how much depends on spring rates), there is little change in toe with rear suspension movement.

[econti]

So basically just weld in some camber/toe correctors and run stiff springs? That was pretty much my plan short of there being a fix. Just curious if there was something to help it

[e304me]

There are subframe bushings that will raise the subframe so the roll center etc does not change as much when the car is lowered

[econti]

So it turns out that apparently E24/E28 rear subframes fit with fabrication. These supposedly have a shallower (for want of a better word) trailing arm angles and so camber gain isn't as extreme.
Can anyone confirm?