I would contact Acedeucy, he can give you tons of information on the headrests and where to buy them. He is very up to speed on the market so I am sure he could point you to the right reseller to get a good deal on the product or if you have questions about functionality.

http://www.xoutpost.com/members/6115/acedeucy.html

__________________
Jeff
Current:
'07 Jeep Wrangler
'06 BMW X5 3.0i

Former:
'12 WRX; '08 WRX; '06 BMW X5 4.8is Dinan S1; '02 BMW 530i Dinan S2