They say they're toe arms, not camber arms (I've never heard of an S40 needing extra toe adjustment). From looking at the pic and having no scale reference, I'd guess they do not fit. The straight, round bar is too different from my flat, cast pieces.
In our car, rear camber does affect rear toe because of the geometry of the lower arms. They're asymmetrical, on purpose for handling. As the camber increases, so does toe-in. In fact, you can't adjust the two parameters independently in ours, stock. Only the toe-in can be tweaked, and camber changes only slightly. The aftermarket arm corrects this.