Has anyone ever installed Bass Shakers in a XF or otherwise?
http://www.aurasound.com/bassshaker/...ast_2b_4_a.jpg
http://www.aurasound.com/bassshaker/...ast_2b_4_b.jpg

A friend of mine installed it one his car (not XF) and it was cool.
Aparently, it turns the bass into kinetic energy. So if you install
it under the seats it will shake the seat. There is a dial where the
driver can pick how hard to make the bass shakers to work.
I think you might also need an amp.

If you have used them do you have stories? suggestion? pictures?