They DO NOT fit. Ball joint is completely different.
However, just because they do not adjust does not mean they are only useful for a specific amount of lowering. Almost any amount of lowering is beyond what these correct for (~10mm) so really they are just making things "not as bad." The trouble with trying to correct with taller and taller spacers and ball joints is that it significantly increases the forces seen by the suspension upright. On Subarus I have seen the upright break at the ball joint due to a too tall roll center adjuster:
The nice thing about these cars is that the ball joint is lower and in the control arm, so the geometry is already better off, plus the upright has more material and looks a bit stronger where the pin goes through compared to a Subaru.
Robi's kit looks like a pretty good choice if the car is low.