I know nothing about this, but was curious so I did a bit of digging. Apparently the 10-12 Supercharged RR’s came with this, they have wires coming from the top of the struts under the hood, so I doubt it could be “retrofitted”. Arnott uses the same part for 03-12 non supercharged L322’s, so nothing should be different dimensionally.
I’m guessing it just decreases the oil flow inside the strut body at either higher speeds or acceleration rates to deal with the 575 hp engine in a somewhat dated chassis.