Hi,
I'm not sure they lower 50-60. They should lower 40 (brand is AP) but i think it's a tad more. Maybe it looks while it has a little bigger then stock tires (155/80/13). But i'm hitting bumps easily and next week i'm going to mount some Ronal Turbos with 195/45/15 tires, so that would lower the car an additional 10 mm.
Here are some pictures of how the car looks at the moment: