As mentioned above, we have just done a Philips H4 Hid Conversion on a RS Liberty.

Below are the pics of the install -- do note that the Philips H4 hid conversion kit uses a negative trigger system whereas the RS Liberty runs on a positive trigger system, so you have to reverse the polarity for the hids to work in this case.

Philips H4 Globe fites perfectly into the H4 location of the Liberty RS:



Philips H4 Plug n Play fully installed:



Finished product: